I think it depends on what itch people like scratched when it comes to gaming. When I was younger it used to be overcoming combat challenges. I think those who crave getting that itch scratched love games like this. I'm not that way anymore. In fact, I actually prefer easier combat as I've gotten older in lieu of more exploration, puzzle challenges over combat challenges, and stuff like exploration progression. Getting a certain ability that allows you to reach new areas, etc.
But it depends on the game. I enjoy combat in God of War. I enjoy combat in basic shooters. I enjoy combat in JRPGs. I don't enjoy combat in Soulslikes though. In fact, I kinda hate it. Which is a big reason I don't play them much anymore. Returnal(and probably Saros) are of that difficult combat variety that I just don't enjoy anymore. In gaming these days I'd much rather overcome a super difficult platforming challenge in a game than a difficult fight. I find the former more satisfying. I play a lot of Metroidvanias and they're my favorite genre these days and a lot of them have difficult fights and as much as I love the genre, the bosses are like my least favorite thing about it. I just think difficult combat is tiresome anymore. The concept of fighting bosses, learning their patterns, fighting them again... getting better and better. I find that super tedious.
And Returnal is kind of all about that even outside of combat. It's about mastering levels, enemies, bosses through repetition and I just can't stand that stuff anymore. But I get why others love it.