One reason is that Epic are very dismissive of Linux, while Steam go out of their way to be supportive and GOG are supportive when it’s convenient
Another is trying to lock games into exclusives with them, which other distribution platforms don’t do so much
That said, if you don’t play games without cross platform multiplayer and don’t care about Linux support or see yourself caring any time soon, there’s not a huge reason to push you towards steam and away from epic. GOG is more of an anti-DRM thing, however barring sales the price and the cut for the devs is identical on all of them and it’s the same game aside from DRM.
Except Hasbro didn’t get a game of the year, “someone who licenced an insignificant property of theirs” did, and so who cares (other than everyone who made/enjoyed the game, but nobody “important” like Hasbro’s execs or stockholders)
1000 bugs isn’t that big, especially when it’s the same bug surfacing in different ways or bugs you either barely notice or look past (but do notice, eg an alignment issue on the ui)