No, Retox is not wrong.
Torghast is designed to allow solo play. PvP literally cannot be played solo. It requires a team effort. That’s group/social gameplay.
You can see how well the “don’t force me to be social” attitude works in yolo RBGs. Solo queue will be exactly the same. You’re not getting anywhere with a “leave me alone I are solo playur” attitude.
How are they going to play alone when they need to communicate with teamwork in order to progress in RBGs?
Yes it is built around it. M+ group content. Raids group content. PvP group content. Even some WQs are group content. The game is not built around you sitting afk in Oribos.