Aside from the controlling issues (I hate the controller gameplay in this game), I can only spot PS4 players by them being stuck longer in loading instances or watching cutscenes longer due to quicker loading from my SSD. And the way they do their awkward turns - the same as you can do by right-clicking the mouse and then move the camera. And the higher chance they do not communicate.

But else? Mostly muscle memory.

It is rather funny though that the OP calls this "discrimination" and all the PS4 players jump in to defend their console and turn this thread into a "Console Master Race" in a blind reactism as if this would matter. Please don't.

I have all (!) my skills visually ready literally as they are on my keyboard, no weird visual moving when I press a button and changing layers so I can blindly press like you can on controllers. Plus I can easily click on the less important ones with the mouse. I play every game analog but FFXIV feels awkward to me. Maybe because I am also talkative and often chat with my FC, which requires me a lot of micromanagement (chats, quick inventory access,...) which you can't on controller obviously.

Probably like ike driving a car with joysticks - some would love it, some don't.

Sincerely,