Huh maybe it’s cultural but I have totally encountered this with older people. Any time there is a ticket or info booth like at a train station, they are either staring or doing something else and I never know if I’m interrupting something. It’s the best when they fiddle with something looking very busy, and then they look at me annoyed that I’m not saying what I want from them.

Users (and I think Discord too) call the communities servers, and channels are the individual topics/threads in a community. It might not make sense from a hosting perspective but people do call it that

Nah it’s just that they have blocks of the same size. It probably synchronizes terrain using analogous block types where possible, and player position. Basically it has to convert everything into something similar.