Just to be clear to some commenters: This isn't my game and I never developed anything for Stadia. I only develop for Steam and Nintendo Switch and you can find my games in my HN profile.
I just found an interesting thread on game development Reddit today and wanted to share. I don't have anything to gain or lose here.
I agree that it's debatable whether that game really required 4 months of work to port. It does look simple. So, maybe the developer isn't that competent. Or maybe the whole integration process takes a lot of effort? Idk.
Thanks.