How is this different than a normal treble bleed cap?

[Top-L]

Was reading this article:

https://www.seymourduncan.com/blog/latest-updates/why-use-push-pull-pots

Then it talks about the "specially tuned" high pass filter on JS2410 guitar. Sounds like a great idea. So I find the wiring diagram (below).

It looks to me like all it does is put the treble bleed cap on a push pull. Is that all it is? Why are they calling it a "specially tuned high pass filter"?

AFAICT, this would have almost no effect when volume control is on full, and when volume rolled down, it would alternatively let you treble bleed (or darken).

 

[jeremy]

yeah, thats all it is. a treble bleed on a switch

 

[Chistopher]

Yeah, all 330 pF can really do on a guitar is a treble bleed.