I don't feel the need to sell Linux to someone who isn't interested or who has already decided they are going back to Windows.
OP didn't ask for help. OP said "This one game doesn't work for me, gaming on Linux is a pain in the ass, I'm going back to Windows." (paraphrasing)
You are not going to convince me coddling those kinds of posts is beneficial to the community.
I'd use BSD or even (shudder) MacOS before I used Windows - and while not everyone needs to feel that way, I reject on its face the idea that the primary goal of the Linux community is to endlessly try to convince people who have decided to go back to Windows not to go back to windows.
I use Linux because I like Linux. I like to interact with people who like Linux. I love to help people who want to learn to like Linux.
If someone looks at the totality of awfulness that is Windows and MS (and i say that as someone who supports Windows on the sever and the desktop) and decides it's worth it to go back because they want to play a specific game, that's fine, but I feel no obligation to beg and cajole them to come back, and I bristle at the implication that I, or the community at large, should.
I'm also not going to pretend that a post saying they are doing so is in any way a contribution to the linux community. It's not. At worst it's a troll and thumb of the nose as they head out the door, and at best it's unhelpful, and points the finger at Linux when that's not where the finger belongs.
Did no one know this game didn't work until OP posted about it? Did OP contact the DEV to let them know they should do things differently? Has our understanding of the state of gaming on Linux been enhanced in any way? No, probably not, and no.