Quoting: mr-victoryOP or anyone with a dualsense I have good news for you. The FW update tool actually works in linux.
https://linuxgamingcentral.com/posts/how-to-update-dualsense-firmware-on-linux/

That IS good news! It's a shame a native Linux tool isn't available, but at least it's not a Microsoft Store app.

Thanks for the feedback, everyone. I'm already checking out all your suggestions.

I have not used Bluetooth, but the wired Xbox 360 controller has worked for like everything. I upgraded to the PS5 controller not long ago (using wire) and there is one game (SnowRunner) so far that I had to use the Steam controller compatibility thing to make it work. I get Xbox buttons in the game and have to know the PlayStation reference. I can recommend either of those for wired use.

Reason I don't use Bluetooth is I have a PS5 at my computer desk and I don't want to re-pair back and forth.