That may have been its critical reception but the game was wildly profitable for CDPR: https://www.forbes.com/sites/paultassi/2021/04/17/cyberpunk-...
I think gamers keep expecting groundbreaking games, but there's only so much "new" most games come up with. The really creative games are made by Nintendo I feel like, every other one is once in a blue moon from different studios.
https://www.youtube.com/watch?v=P99qJGrPNLs
I still watch that thing sometimes because it was so good. I think people reacted to the potential of the ideas put forth in that trailer.
in hindsight, I'm pretty sure that video was used to gauge interest before they started building the game, but for many of us it was a sign of what could be. And I think a large part of the response to Cyberpunk's release was what it wasn't.