Alright then, that settles it: BW2 I guess were just so amazingly well-received that they actually managed to be exceptions to the cycle, which I can admit and have admitted is not absolute law. But if other testimonies I have from possibly even older players (dunno how long you've been playing Pokemon) that have recollections of the DP and even RSE days as well as the old forum posts I linked in a previous posts are anything to go off of this was just that, an
exception to the rule. Every other game has received some degree of rage at release but people, for a lack of a better term, got over it. HGSS got shit on, OG DP got shit on, OG RS got shit on! Again, that's the impression the testimonies I've followed have given me, if you've been around just as long and can argue against that then feel free. Also just because BW1 even at peak outrage had elements most people liked doesn't mean the cycle doesn't apply. Sword and Shield right now have gotten some pretty universal praise for stuff like the really really well-handled gym challenge that even a lot of the most critical people can concede to, kinda like your examples for BW1.
Actually did you know that for the past few years
Garbodor has steadily accumulated a cult following? Hell not even that, there are plenty of people in the online Pokemon space who unabashedly
adore this Pokemon or at the very least think it got way, WAY too much shit for its design concept, both of which are opinions that they likely would've gotten lacerated for at BW1's launch but are nowadays generally tolerated, it's seriously gotten to the point where I actually think liking Garbodor is not even a hot take anymore.
Absolutely not. There's definitely a TON of "x new game sucks y was so much better", but honestly very little of that is begrudging "y game wasn't that good but it's better than x", it's genuine heartfelt praise I'd say 80% of the time. Even though its currently early in its cycle rising X and Y fans are already placing the game highly as Pokemon games, putting it in their personal B, A and even S ranks despite being old enough to have experienced or going back to experience older games. Just take this tier list from a buddy of mine:
I didn't go out of my way to find this person by the way, I just happened to come across them while joining a new server! This could be seen as a very extreme and highly unusual case, but IMO it's still a sign of a greater trend.