As I wrote in the other superfluous ds thread:
It’s not a solo game. Things that change the way you can play also change my options and how I have to play - whether or not I want it. Constraints make people do things in ways they otherwise wouldn’t. They make people have to meet others or group up when they otherwise wouldn’t. They make people go out into the open world or grind specific mobs they otherwise wouldn’t.
There’s lots of ways people play and interact with each other that change when constraints are removed. Some constraints are a good thing - they encourage and facilitate fun types of gameplay.