Yes, Sony started enforcing a requirement to link a PSN account in order to be able to keep playing Helldivers 2. This was months after launch, after being sold in dozens of countries where people can’t make PSN accounts. Sony responded by just delisting Helldivers 2 from those countries. Looks like they’re doing the same thing with Ghosts of Tsushima and delisting it from countries that can’t make PSN accounts.