Four people sat a table at the pub. Three of the four having general chit chat/catch up. Person 4 only speaks to answer questions directly addressed to them about their own job/life/family. Doesn’t ask anyone else any questions, or say anything in response to the chat of the three. Doesn’t contribute to the conversation except as above in response to direct questions about them. This person also spends the duration of the conversation (30 mins or so) fiddling with a cocktail stick on the table. They were not forced to come along, and when later asked say that they like all the people who were there and that they weren’t bored by the discussion.
I think this is rude and think that most 10 year olds (let alone 30-somethings) have mastered the basics of turn taking in conversation, showing interest, and not fiddling with stuff (which gives the impression they are bored regardless of whether they actually are).
Their view is that the reason they didn’t speak is because they were making an effort to listen, and that they looked up at those speaking regularly while fiddling with the cocktail stick.
YABU - this is fine
YANBU - this is rude
Very happy to be told IABU if I’m overreacting.