Wine was never developed by Epic, as far as I know. Wikipedia showed nothing about Epic, not a word.

I think they misspelled "whine".

That, or they're saying Proton isn't Valve's work alone and that it's heavily based on WINE. I'm not sure if that's true, but it's another way to read that comment.

I never said epic made wine.

Wine is like 99% of proton. Historically it was mostly sposored by Collabora and I think they were doing it so they clould run some windows programs on mac (my memory is fuzzy, was a long time ago).

Valve came later. There were already out-of-tree patches speciffically for games. The wine team didn't put those in because they are hacks while wines aim is 100% compatibility with windows.

As those patches grew, stuff like wine-staging emerged that would massage those patches into what the wine project would accept. And even later proton was born (i think from some guys repo, i think valve hired him).

If you want to attribute something to valve, then ACO is a better option. It's amazing.

I'm just a bit annoyed that nobody praises wine while everybody speaks like it was all valve.