This was my experience too. I tried setting up a Bottles container for it as I’ve had success with that approach a few of the times that I can’t get a Proton version to work, but no dice.
I actually wasted a couple of hours trying to get it to work because it looks fun, but I gave up when I realized that I had spent all of that evening’s free time not having fun.
I couldn’t find anyone talking about getting it working on the Deck. If you happen to come across any working instructions, would you please ping me? I’ll do the same for you. Thanks in advance!