Attention Helldivers, Due to technical issues at the launch of HELLDIVERS™ 2, we allowed the linking requirements for Steam accounts to a PlayStation Network account to be temporarily optional. That grace period will now expire. See details below in this post. Account linking plays a critical role in protecting our players and upholding the values of safety and security provided on PlayStation and PlayStation Studios games.
No they don’t?
Helldivers 2 was produced with a Sony publishing deal, but unless I missed some news, Arrowhead is still independently owned.