Marshall gurus give me some guidance
Indeed, though I did not say "wrong" period. Just the wrong chords, meaning if you're comparing them to the original (or the Kingsmen's version, which is what most all those people actually covered). I'm not saying those versions don't deserve to exist, just that they change the chords.
most
I'm also only talking about guitar players, because that's what the discussion is about. Keyboard players and horn players tend to get it right more often...but keyboard's and horns are nowhere near as common as guitars in cover versions.
It's been covered and performed by way more than 1,600 artists. Those 1,600 make up an extremely small fraction of everyone who's ever done it. Those are just known published covers. I would hope published artists would be more likely to catch the nuances of the original, though that isn't necessarily the case.
I have never seen anyone play it with the same chords as the original (or Kingsmen) - not one guitar player I've actually seen play it in person. "Power chord" versions get the closest, because they don't contain a glaringly wrong chord. But every single time I've seen anyone who plays full chords on it, they change the chords from the original, which to my ear changes the feel of the song significantly by either taking away or screwing with it's largest distinctive harmonic element.
It isn't that people are incapable of playing it with the original chords. It's no harder than playing it "wrong," technically speaking. It's just that often when we think something is super easy, we really don't bother to pay it enough detailed attention learn it properly.