I’m pretty sure they’re talking about the subtle ad disguised as an email in the promotions tab, its not even from someone I wouldn’t expect to send me an email, that’s why it’s so sneaky. It’s literally a promotion from a company whose emails I’m subscribed to.
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.
Plexamp is pretty great. Plex was functional when it came to music but plexamp’s features and ui really makes it feel like my own spotify