No they're not. The Witcher 3 is about as mainstream as you can get.
Also, a lot of posts that i have read in this thread seem stupidly contrarian against common consensus just for the sake of it. It's fine to dislike a video game, but make some sense and elaborate if you're posting your opinion. Not just that it's healthy for you and the community, but it's also infinitely more interesting. Otherwise, you're bullshitting or trolling and no one will give a shit outside me pointing out that it's pointless.
There's barely anything better than The Witcher 3 as far as modern open-world role playing games are concerned. The fact that its re-release garnered near universal acclaim also proves that it hasn't "Ag3d" a second and still works today. Its gameplay is great despite whatever the fuck you expect, the writing is second to none outside of Planescape: Torment, the characters are excellent, the world is fantastic and generally interesting to explore.
I think Elden Ring has a slight edge over it, but that's about it. And it's also morbidly interesting to check out some of the hate on that game, which is fucking amazing given that it is fundamentally the absolute best thing FROM has ever made, cutting out so much of the bullshit of previous entries in this loosely connected franchise.
At the end of the day, the more a video game is successful, the more awareness it receives, the more people play it, and more divergent opinions appear. It's just a shame that some of the honest, interesting opinions are lost in a sea of pure shit.