When I was younger my friend group got in a heated debate about something semantic for fun. The opposite side from me tried to prove their point by editing Wikipedia and showing it to me. They had to show a screen shot because it had changed back in the time they ran from the computer lab to the lunch room, I used this in my arguments every time we argued about it after that.
The simplest and most likely reason is just because they don’t have to. Playstation is leading Xbox by a lot this generation (so far, things can change) and PlayStation just has no incentive to add value to something they’re already selling record numbers of. Xbox is trying to attract customers, customer playstation has left on the cutting room floor, and backwards compatibility is a way to do that.
When I was younger my friend group got in a heated debate about something semantic for fun. The opposite side from me tried to prove their point by editing Wikipedia and showing it to me. They had to show a screen shot because it had changed back in the time they ran from the computer lab to the lunch room, I used this in my arguments every time we argued about it after that.