My feeling is that there are basically three reasons for the focus on multiplayer:

* cheap out on development: essentially just have a few low detail maps that people play constantly

* people want to look “unique” so you can charge them for near-zero-cost assets

* people don’t complain when you say “must have an internet connection”

All of which are garbage reasons to me and just mean fewer good games, and less reason to buy them (I’m uninterested in buying a game if it is just going to stop working in a year because they’re no longer selling it).

If I want to be subject to swearing and shitty behavior is just become a high school teacher.