Please say where I stated that this would be a bad thing for people who are "close together and have low latency amongst themselves". I simply pointed out that anything to do with dynamically creating vehicles in addition to using user interaction during it would be very problematic to deal with at high latency.
add-ons whose point is to make the game more unplayable at higher latency
it could have potential in singleplayer gamemodes or LAN play.
You never said it directly, but first you posed a very cynical attitude by saying its sole purpose was to make the game unplayable at high latency. Then you mentioned where it could be useful and happened to forget to mention Internet play, close or otherwise, which I can't imagine was an accidental thing.
You came off as if it was a bad thing in general, with a few exceptions, and I thought it was a good thing in general, so I fought for it.