That isn’t why. PlayStation doesn’t view this as a problem and in fairness, I don’t either. If the game had shipped with this requirement, it would’ve been fine. Many people put up with Ubisoft and they have a whole separate account plus launcher.
What Sony actually wanted was to make it easier on their server side to authenticate purchases and then to use the same PSN account systems to matchmaker for easier cross-play.
Would they collect data? I guess. They can already do that if they want as a publisher. So yeah it’s purely just to use their ecosystem, which makes sense.