Interesting yh that would confirm my speculation if the retracted statement was accurate.You can't even turn off cross play with PS4 and PC Paragon play. We're always playing together. PS4 players can see who are on PS4 or PC though. PC players can't see which system their team are playing on.
Hmmm it seems not being able to see platforms from the PC side which be a PS/XB policy as it's the same on rocket league(If this wiki is accurate which I think it is because I have never seen the shield icon on PC it's always PSYNET).
PlayStation 4 players see PC players with the "PSY NET" icon on the scoreboard and vice versa.
PC players also see Xbox One players with the "PSY NET" icon, but Xbox One players see PC players with the Rocket League shield icon instead.