No, there's a single question asked: how long have you had the game open on your computer?

Costco has a no-questions-asked return policy, and demo-ing your purchase is absolutely part of the expectation for how people will use said policy. Steam even explicitly includes "it wasn't fun" as a valid return option, as long as you reached that conclusion quickly enough.

To be clear, I'm not saying the policy is wrong, it's clearly designed to prevent abuse, I'm just saying that it's not no-questions-asked.

Yeah I always considered something used to make sure the game will run correctly on my system and I feel like 2 hours is generous enough for that use case. I suppose it doesn't preclude game breaking bugs later in the experience but nothing is perfect.

Valve is there to facilitate the sale of the game, not guarantee the game is good.