They’re referring to Sony’s stance that all their PC releases should require you to have and sign-in to a PSN account. That’s separate to PS+, you don’t need to pay a sub.
A lot of publishers include this requirement on their PC releases, regardless of whether they’re single-player or multiplayer, and I think a lot of people are fed up with having to have so many different accounts.
I don’t think that’s their goal at all. Otherwise we wouldn’t see any sequels released on PC, that would be a much better strategy for converting players to console. The only reason publishers require their own logins in games, at least for single-player titles, is data collection. Data is very valuable.