Why snip my posts to remove the meaning of it? That one part of a sentence, that's a part not the whole sentence, was part of a post explaining my experience of being in a group of people of which I was the only native English speaker among people talking in their own language. In my case, which is opposite to the OPs car journey situation, the foreign language speakers didn't all carry on in their native tongue but at least one would talk to me in English, even involve me in the conversation.
Basically I was saying that most groups of ppl whose native language is not English in the UK do not exclude English speakers in the way the OPs passengers did which is poor manners. Well not all I the group. Their manners being much like our own in that they are usually just as pleasant as English people in a work or other communal space. Nice people. The snipped part sentence, taken out of context, implies a slightly negative of at least suspect sentiment which was not there.
Imho if you quote someone I think it's good habit to quote enough to get the full meaning of the post with the section you're looking at emboldened. This is probably as quick as deleting the rest without removing the meaning and subject of the quoted post. There's a few forums I've been on that has rules on snipping posts mostly related to misrepresentation or nitpicking a post line by line in mostly repeated threads with different sections snipped out.