I think pretty much every game I've played has caused a controversy when it turned out it wasn't just like its predecessor! Oblivion wasn't Morrowind II, Morrowind wasn't as "deep" as Daggerfall, Fallout 3 literally fell out of Satan's bottom and was a stain on the sanctity of the originals. Conversely, New Vegas will never be bettered and only bore a passing resemblance to FO3 because they were forced to do it. Even though The Outer Worlds wasn't forced and looks and feels exactly the same anyway! (And is better...)
Half Life 2 wasn't as good as the original, Doom 3 wasn't as good as the original, Bioshock 2 wasn't as good as the original and Infinite wasn't as good as either of them. Ego Draconis wasn't a "proper" divinity game because it was an ARPG in other words not-an-RPG-at-all, Original Sin would be a worthy successor (to what?) if only it had all humour purged from it because RPG are srs bsns.
The Sims 3 wasn't as good as The Sims 2. Mass Effect Andromeda wasn't deserving of the name, even though IMHO it was the closest in overall feel to the original. etc.
I'm not immune to it either: I still dislike Skyrim as it felt charmless compared to its predecessors; Sims IV lost something along the way and not just a world featuring terrain, and feels more like Sims 2½ but again without the charm; DOS2 isn't as silly as DOS. Fable III wasn't as good as Fable II though in that instance I played II more recently as I didn't previously have an Xbox to play it on, and I don't think it's a controversial opinion. Mass Effect 2 wasn't as good as its predecessor and ME3... well, it had "that" ending. Which I suppose is a good place to end: choose red, green or blue for the same thing to happen, i.e. for me to stop writing!