> as of today 1 unit? running Linux.
I think you are misinterpreting that number. It would be better read as "as of today, the first PS5 running Linux". There were people running racks of PS3s as Linux servers back in the day not as gaming stations but compute using its hardware. People will do crazy things. Do not write them off.
Those PS3s were sold with official Linux support, so running racks of them wasn't quite as crazy as it might have sounded at first.