That topic ony bring hostility and bad faith from both sides.
What I find crazy about some of the active pro console crossplay is how they try to depict the situation as being "an issue" when everyone knows it never was and never will be. We used to play online for 18 years without console crossplay, just because Sony dont want to open the valves doesn't make it "an issue" all of a sudden. Instead of acting like Sony is taking away your human rights, just admit you're to happy to jump in every time you can to depict Sony as the bad guy with your unconstructive and provocative "#4ThePlayers" posts. What's even more absurd is how all the games discussed around console crossplay (Minecraft, Rocket League, Ark) are only juggernauts with a huge fanbase on every support.
As for Sony supporters, it would be better to just say nothing at this point, especially since you don't even know the deep reasons behind Sony's stance (the children thing being obviously a random drunk PR). Fun fact : just don't post anything and the thread would not even reach page 3, because 1) the matter is deliberately overblown and 2) there is in fact nothing to discuss anymore about it, until Sony gives some kind of explanation when being questioned about it (whenever you're ready, journalists).