

Wine is a compatibility layer for windows programs. Wine aims to be general purpose for all windows based programs. Proton is a compatibility layer that focuses primarily on video games. Proton includes a patched version on Wine.
Wine is developed by CodeWeavers, while Proton is developed by Valve with cooperation from CodeWeavers.
It’s basically a games focused Wine.
You seem to be missing the point of why they do it. It’s to keep the public talking about it. They realized when you dump the whole season, people will talk about it for maybe a month, if you’re lucky. But if you slow drip it and keep people in anticipation, the show is talked about for longer, which helps lure new people in to watch. Is it better for the consumer? No, not really. Is it better for the studios and their bottom line? Yeah, probably.