There are games that let you opt-out, hell even ones that ask you when you first open the game. There are bad apples, but there are plenty of good ones too.
If it asks you then it's neither opt-in nor opt-out. Then it depends on how it asks you. If it's a simple yes/no, it's fine. If it's typical tech bullshit where your options are a big "I want to make the world a better place and save the whales by sending my data" or a tiny button in the corner labeled "maybe later" that takes you to another screen saying "please confirm you want to opt out of data collection and kill a bunch of kittens" then not so good.
If I want to play a game and provide my feedback, the default should be that that doesn't happen unless I explicitly say it should.
Opt-out means that, by default, you're collecting metrics from my plays, until I find the means to opt-out.