This is the way to go. You aren’t under an obligation to change someone’s beliefs. If they reach out to you, be a support and offer help. Be a good example of an atheist by being a good friend.
If you really feel the need to push, something non confrontational like the street epistemology approach might work well.
We can know that certain gods are false simply because they are logically incoherent, but sure, the non falsifiable concepts are simply that, non falsifiable. I’m atheist because I don’t believe in a god, not necessarily because I believe any specific god doesn’t exist.
I’m with you that putting others down for their beliefs is cringy, but we shouldn’t pretend that having a belief in a god without evidence to back it up is reasonable. There absolutely is a way to know a creator exists, and if they’re powerful enough to create the universe, they know exactly how to demonstrate that.
I use a steam deck for about 2/3 of my gaming and I rarely have issues with games. That said, I mostly play indie games, but there is so much of my library that is supported that I’m never going to run out of things to play. Proton has really done wonders for gaming on Linux. Are you wanting to play multiplayer games or brand new releases? Or are you more of the patient gamer type?
I wouldn’t run steamos on a full desktop, but you can still get a lot of the benefits just by using steam on Linux. Definitely recommend trying it out.