Fair enough, I do it all the time and so do people in my friend group. There's a new game, it's on sale, I know I buy games on steam regularly, I buy the game, I try it, it doesn't work, it's not fun, something. I return it within the 2-hour window fairly regularly.
In fact, this steam two hour window has been part of game developer philosophy for a while, putting the good content first, so you don't get bored before the 2 hours expire. There's been a fair few reviews where people speculate this was just front-loaded so people don't return it
But it's a very small minority. You're cutting out like 90+% of a potential demo audience by demanding cash on the barrel head up front. It's objectively worse for the customer by a significant margin.
I send my refunds to my Steam wallet. Either I eventually get a "free" game that I like or I get to keep trying until I find a keeper.
As someone who has used the refund system a lot, you can exceed the 2 hours. I don't know if they look at my Steam account or just accept my reasoning for a refund but I know I've received a full refund for games that were well past that 2 hour mark.