Nice! I already had a PS5 but I got my Bathys for Christmas
Other dacs can work, but you’re right that it doesn’t recognise this one. I use my iFi zen dac on PS5 day to day and it works fine and as I said the Senheiser Monentum 4s do also get recognised by the PS5 but it doesn’t work quite right.
The PS4/5 recognises dacs that suppport the UAC1 standard but not UAC2. A lot of dacs like the creative Zen Dac can operate in either UAC1 or 2 so they work, whereas many others only operate as UAC2 and those won’t work. I’m guessing the Focal is UAC2 only.
I did try and listen to some games via the 3.5mm plugged into the creative zen dac and honestly I think it sounds really great. They have very good sound stage for a closed back and I think the mid range dip artificially extends that a little bit. I also think the imaging is genuinely brilliant.