I think your preconception of Fishmans is what's speaking. You're right, they're extremely overhyped and they're basically advertising them like they are the be-all-end-all of pickups when they're really not. But bottom line for me is they do sound good. Do they sound better than EMG's or passives? Maybe not, but they don't sound worse for sure, and they've got the multivoice thing going for them.
When I first tried them, I was dubious because of the hype. But I bought them because EMG's don't really sound like EMG's these days, and I wasn't going to go out of my way to hunt a pre-2018 EMG 81. I was pleasantly surprised. The Modern Ceramic basically sounds like an EMG 81 that's tighter and more polished. I get why some people might prefer the EMG 81, but the reason I like the EMG 81 is it's tight and polished, LOL, not because it's fat and raw. So the FIshman basically gave me more of what I like about the EMG 81. And then you have the totally usable passive voice on top of that.
The Classic Bridge sounds like a better Duncan '59B and JB in each voice, and I love both of those pickups, so that one also stuck. The KSE's sound like the Moderns, just more aggressive. The Adler Bridge sounds like a clearer lower output Duncan Distortion, and then it's also got the Modern Ceramic voicing. The Modern Alnico also sounds great in the bridge. All good sounds.
So yeah, I agree, they're overhyped to the point where I didn't want to try them myself. But I'm glad I did.
TBH, I've liked all the sets I've had. I have not liked all the Duncans I've had.
And the Roots sound NOTHING like the 81/60 combo he was using before. It's not like the X series which are slight tweaks. The Roots pretty much sound like super hot Ceramic passives wiith some active thrown on top. I wouldn't be recommending them because I dislike Slipknot, and I particularly dislike that Jim Root hipster guy, but I found a good deal on a set used, and I was pleasantly surprised.
I can sum up the EMG 81 in one word: Slayer. Particularly 1994 and before. Very mid forward, boosted Marshall JCM800 sound. Highs and lows rolled off. People only later considered them "thin" sounding when they listened to them alone and concluded they didn't chug while they conveniently ignored how the 81 sits well in a mix. Nobody had an issue with 81s chugging through Mesas on "Sad But True."
With "Sad But True" in mind, you can scoop 81s too. They produce an interesting sound when used with my EXG control through my Carvin MTS3200 (JCM 800 clone from about the year 2000). But scooping them kind of goes against the voicing they were designed for--about 2khz emphasis. This mid focus also gave 81s, to my ear, a vintage kind of late 70s/early 80s sound similar to some DiMarzios when used through British amps (like on old Judas Priest or Accept records). I also find scooping a Marshall tone produces mixed results. You have to really sculpt the problem frequencies out and boost the right settings up front. But, when it works, it's gold.
In contrast the EMTYs were consistent like the 81 but with a more modern voicing--less British, less mid forward, less grainy and textured, more designed for people who like to play through Mesas, 5150s, Engls, Diezels, Riveras, etc., and like a balanced, tight, but cutting tone.
I would say the Fluences have two main things going for them:
1) Ease of installation (my understanding is they are modular like newer EMGs).
2) Voicing options that standard pickups like the EMG 81 don't have. You need an 89tw/89twr/81tw for that. Fluences have made active pickups more flexible and, in this day and age, for guitarists seeking tonal flexibility from active pickups, there really isn't an excuse for a one tone active pickup unless you want to be a master volume only player.
3) The main drawback with more traditional makers like SD and DiMarzio is they seem resistant to a modular design for passive pickups. My Duncans wired to Triple Shots, independent volume knobs, a phase switch, a killswitch, and a tone knob are always a pain in the ass to wire up relative to my EMGs, but the tonal flexibility I get from the Duncans is worth it. The downside is once they are installed I don't want to go back through that ^&(& again so they stay there.
I strongly advise Seymour Duncan to *consider* a modular passive pickup design, especially for people who use all 4 conductors for split/parallel voicings, and not see modularity as some unacceptable concession to modernity. You can always offer the traditional designs to purists. I guess the Liberator was a step in the right direction but I don't consider it as easy as putting quick connects on pins (simply doing this from the Triple Shot to pins on the back of a passive pickup would sell a lot more Triple Shots, IMO). You can always cut the connects off for non-Duncan brands.
That said, most people aren't going to go for the complicated wiring setups I tend to favor like something that would be on an old school BC Rich Bich. They just want the thing to be wired up simply and to work, if they even know how to solder at all.
Don't get me wrong. If you gave Fluences to me I'd use them. But I don't see much use in buying them new with the setup I currently have.