Honestly what's the point in having it? Heroic is already a better option. GOG Galaxy is a simple launcher, if they port it to Linux then it would also need to be a Wine/Proton prefix manager. Its not a massive amount of work, especially since umu-launcher exists now, but its just pointless effort IMO. Unless they're willing to invest the same amount of work into it that has gone into Heroic and Lutris, it'll just end up being the inferior option.

tbf with heroic launcher starting to implement comet (galaxy api), it might not be needed anymore

Look at what happened when Epic brought a store to Windows

Those barriers still exist on Linux

GoG makes even less sense to have a launcher because you can just download off their website

Because it doesn't make business sense to them. The author of the article makes just two arguments and assumes those are the only relevant arguments. There's a lot more involved in the decision to port GOG Galaxy to Linux. Like support, for example.

Personally, since proton got so good and heroic can just use any version of proton installed, I've began to buy GOG games again and run them through heroic. 99% of the time they just run OK. But of course I do my due diligence and check protondb before making a purchase.

GOG doesn't really do much to maintain the Galaxy app unfortunately. The idea of being able to put your entire library into one launcher is appealing but half of the plugins don't even work. Even the steam one is broken out of the box these days (there is a newer version on GitHub, but I don't think it's official). So them not porting to Linux is unsurprising.

I use GOG to get away from downloading things in the context of a store and have a nice little archive of installers to use whenever I want it. I am trying to get as many Steam games to just be that way so when I run the binary it just works without Steam being involved at all. Laughably few will do it on their own but there are some ways around others...

Yeah, quite happy without some bloated launcher, thanks.