Because it's nowhere near the same. Is it a bad release? Yes. Is it overwatch2 bad? No, not even close.
For the example: even tho it's true that CSGO used to be a paid game, it had been free for 5 years and before that it was 15$, not 40 or however much was ow.
Cs2 comes with a whole new engine which changes a bunch of things, unlike ow2 which is just an upgraded version of the same stuff; same errors, same stuff, basically.
OW2 also made everything in the game more expensive to buy. Etc.