On Steamdeck, I haven’t tried multiple controllers, but with one, it has been rather seamless for both the PS5 and the Stadia controller. They are both Bluetooth, and when I turn them on they just work. That said, the original SteamDeck(which is what I have) doesn’t support CEC or Bluetooth waking, so the Switch wins out on automatically turning on and switching my TV’s input. The OLED SteamDeck is supposed to fix that, but I’m not paying for a replacement until this one dies or a SteamDeck 2 comes along.
As a LightBurn user and license holder, this is annoying, but I could see this being a good thing in the long run. Right now, there is very little opensource alternative to LightBurn. As of today, there is a much stronger incentive to make it happen. I’m hopeful this spurs on a modern tool in the open source community that works as an alternative. What LightBurn might have done is save them selves some support overhead and created competition. We’ll see how that works out for them.