I commonly will be in a call with friends, where we all stream the games we are playing independently to each other.

Another use case, one person screen shares YouTube for group watching

And one more, we will often play chess and screen share so others can watch.

This is for a group of 3-10 people typically

I would agree if the features they did work on made sense.

How come every time I open Plex there is another social media integration, yet device downloads haven’t worked for literal years.

Plex itself is niche software, offering niche features is why Plex gained popularity, watch together is a great feature, I often use when I’m cleaning house so I can watch a show even as I move around rooms, same thing when cooking, which let’s the person in the kitchen watch while others may be in the living room.