Nah its pretty rude, unless they tell you they're waiting on an important call or something
Discussion
I can't not see it as rudeness, maybe it's acceptable for younger generations tho?
I will ask my 12 y o and see if I get a non-troll answer :D
I think it is maybe partly a performative aloofness, which I sort of associate with adolescence but I see this being done by fully grown adults. I think I would go as far as questioning if this 'friend' liked me if they did this lol.
Imho must be a very, very important call and I still would say that we can have chat after that very, very important call is done.
Usually, for some reason, socializing with that particular person seem to be a bit cold.
🥶