while it's not true that Sonic was never good, it is however very true that Sonic Adventure 1 is an absolute atrocious game with terrible controls, awful Leveldesign and atrocious boss fights... also absolutely stupid mission types when playing other characters
and it is also true that about at least 1/3 of the levels of the original 2D games were complete ass, as soon as water was brought into the mix it was just awful.
Ah sure, it was so atrocious they made a sequel, and it went on to be one of the Gamecube's best-selling 3P games (alongside said sequel).
Please stop this revisionists history crap and using your own personal anecdotal case like it's widespread: of course the Adventure games have issues now compared to modern platformers but so do Mario 64 and Sunshine. Doesn't change the fact back in the day the games, even with their flaws, were favored very well and are still pretty good games today especially for people who are able to deal with the quirks of some retro games.
Also even more ridiculous to try saying any significant amount of Genesis/MegaDrive-era Sonic levels were bad, even with the water mechanic. It really just sounds like you weren't skilled enough to play the games decently. It's okay; everyone's got games they aren't good at. Doesn't mean those games are bad games, though.
Why the fuck people need to watch a video just to "agree"? Lol
Let their games speak for themselves instead of trying to prove otherwise.
The problem is for a long time there were a lot of so-called "journalists" and content creators who just hopped on the trend of shitting on Sonic because it was cool to do so, and then extended that to the classic games which were well-received in their day and among the legitimate retro scene. A lot of the people hating on even those games being posers because they either never played the classic Sonic games, or never tried understanding their design language and assumed they needed to play just like a Mario game in order to be good.
There have been so many bad faith arguments against the IP over the years that videos like these kind of became necessary, especially considering some of those bad faith arguments were from grown Nintendo manchildren fanboys/fangirls who still have sticks up their bums over the 16-bit 'console war'. When you start asking a lot of these people what aspects of the game design for the stronger entries is bad, their arguments fall apart and shows how weak their understanding on game design (or the game design language employed in Sonic games) actually is.