Most of the Bannerlord "haters" are seasoned Warband veterans, so i can understand why you might feel gaslighted to a certain extend if you are new to the series. If you take Bannerlord as a game independent from the M&B title, yeah it's indeed a nice and fun game. But as a newbie in M&B, you should know that Bannerlord has a long list of promises and hype built up over years all the way from 2012 to 2020. And not to mention its literally a sequel to Warband too (technically a prequel according to the lore but whatever).
I personally hate the fact how TW failed to fulfill the potential of this game rather than the actual game itself. Now we started to see some nice improvements with the 1.8.0 but the game is unfortunately still far from being the Bannerlord we all longed for years and the worst thing is, TW is reluctant about solving this problem