Not early access games but more AAA "Early access games", which means you preorder advanced edition you get to play like a week early. The biggest examples being Starfield and that new Star wars game by ubisoft (with the insane price of 130 for its super special edition). So this is just a logical loophole getting closed. We can have disagreements with the 2 hour refund window on steam but I don't think it was ever intentional for you to play 48 hours of a game then being able to refund the thing since its not official out.
Aha the "Unlock Game Early Edition" trend, which is awful in itself. Makes it a slightly more niche loophole.
I quite like the spirit of the 2 hour no quibble refund policy. It does still have many problems, but being able to play for 48 hours and then refund no-questions-asked was for sure never intentional.