Point #2 is very important. Anyone who’s been playing guitar for at least 5 minutes can play a simple powerchord and that can be sufficient enough to make many amps sound great even if your “fingers” aren’t yet well trained. I remember when I was 15 I was new to guitar, didn’t know much yet, and was struggling to figure out how to get enough sustain/gain for my needs. I remember back then I liked a lot the Vox Night Train (what was I thinking lol), but couldn’t get enough sustain out of it, but then I heard this middle aged guy play and sounded great on it and had lots of sustain. I asked him how are you getting that much sustain out of that amp. I couldn’t do it. His answer was “I don’t know man, tone is in the fingers”. I wasn’t even talking about tone lol, just the amount of sustain he was getting. I later figured out it was simply a combination of him just playing it very loud and mostly that I myself was getting much more sustain than I realized, but was just always under the impression that I wasn’t getting enough (I was more used to solid state modeler stuff back then), but when I listened to others play I didn’t think they need more gain, just myself lol (probably a feel thing more so than sound). I’ve come a long way since then lol
To point 4 I would just say I do still hear emg’s sound better noticeably better in better guitars than lesser ones, just not as pronounced as when using passive pickups. Actually, maybe an unpopular opinion more for tgp, but I think Nik Huber’s are overrated. Very good guitars, don’t get me wrong, but in just tone, I’ve AB’ed many Orca’s and Dolphin’s (owned one) with various McInturff’s (mostly Carolina Custom) (both unplugged and plugged in) and the McInturff’s always were to me the clear winners in tone and even slightly better imo playability wise too. Good thing they’re also not as pricy as Huber. I most recently compared compared my friend’s McInturff Taurus (he paid $1900) to his very fancy one off Huber with a redwood top, all sort of fancy details (probably worth close to $10k) and much preferred his McIturff