As for Debbie Downers, while there certainly are people who have been massively disillusioned by Tesla on TMC (hello
@oktane ), I don't think they are on this thread much. The reactions I see are actually quite normal and understandable to me on the rather more positive "the car is good and/but..." end of the spectrum, where the difference is what is said after that "and/but...".
Some people indeed sing the praises of their car and feel genuinely happy about it every (or most) times they drive it for years after purchase. I have no trouble at all believing that, because I've been there too. It is a transformative experience and Tesla did great on the drivetrain. But got to be honest. I just drove my Model X before writing this message and the experience was, I think the best word I can describe it, absolutely... neutral. Everyday. Humdrum. And it remains, today, I believe the best Tesla money can buy (for a few more weeks perhaps...), so it isn't for example because I skimped on something Tesla offers, nor do I have any regrets on what I bought (I think I timed it well).
Is it because I dislike some stuff Tesla the company does? No. Not really. The company debate is for the Internet and intellectual, theoretical part of my mind, it has little to do with my feelings on the car. It is partly because no matter how good the car is in some parts, it is lacking in others - the interior doesn't exhilarate me, though the drivetrain does, for example. But mostly it is because - at the end of the day - it is still a car and for me new cars lose their shine after a time. Tesla is not immune to that and neither is the BEV experience. After a while it indeed becomes humdrum for some of us, even if at the beginning it was exciting.
And sometimes the car is just a chore. Planning a BEV route and schedule is hard/impossible at times and as a Model X owner the doors do give me some pause where I can take the car and where not. For me the reality is opposite to some here: I drive it less than I would an equivalent ICE, because I do leave it home more often for these reasons. So I think the thread started asked a very nice and pertinent question, even though I can't find anything applicable in the poll itself. The notion that Tesla and BEVs would somehow have infinite honeymoons for all or even most people seems unrealistic. At some point honeymoons tend to end and "real" life start...
Even though the honeymoon is over, I don't personally consider myself negative on Tesla the car at all. Just more like, positively neutral. Put it this way: Everyday appreciation, not appreciation every day... If that makes sense.
Tesla the company may be a different debate.