Good for you, your circumstances lined up in such a way as for you to already have a PSN account through the console you own. But the issues you are ignoring are as follows:

• it is predatory to impose such a major change (and, yes, it is major) on people AFTER they have purchased the game. The ease of creating a PSN account is an utterly moot point, a paying customer should not be forced to suffer changes to a thing they, supposedly, already owned, let alone a change which basically reduces the options to "you either give us your information, or you don't play the game ON WHICH YOU ALREADY SPENT MONEY."

• the more accounts you have nowadays, the more your personal data is sold around. In addition, it's a clear demonstration of encroachment by corporations who really should have no business forcing you to sign up to their shitty platforms.

• it's an extra layer of DRM, and DRM is exclusively a bad thing however you cut it (DRM means you don't actually own the thing you friggin' bought).

• fuck Sony and their atrocious greed. Pure and simple.