OW2 PvE was 100% originally going to be free, then they cancelled it outright and only brought it back when the community spoke up about it, but now for a price. But yeah, as far as I’m aware CS:GO is still available so unlike OW2, you don’t like the new one, you don’t have to play it, you still habe options. Another commenter posted the how to if that’s something you’re interested in.
edit: also as far as I’m aware, Dota 2’s engine update was just a graphical update, they didn’t change anything fundamental to the game. As I said before the difference between CS:GO or CS2 is night and day, they changed a lot.
Edit 2: also I think it’s a little disingenuous to imply that the quality of a game mode that people now have to pay for doesn’t matter