Honestly I've some crack shit going on in my head based off some of the language the dead dude used, but I think it'll probably be best to let shit play out.
Mitsumi has friends because she's extroverted in general. Like that'll happen eventually. Mitsumi also got made fun of to her face in front of her boyfriend by two girls because she was talking to him. She's treated well by her friends but is also definitely looked down upon man.
While Ujie was definitely being a dick this chapter, I definitely feel like some of y'all are forgetting that Shima basically smiled his way through every problem he had in his 1st year, like Shima didn't exactly go out of his way to start disproving some of Ujie's preconceptions to anyone up...
It was the dudes in suits who were saying that, not bocchi. And they weren't hosts they were like scary yakuza types. Joke being that since Bocchi lives relatively far from everyone she was traveling through the city at night.