When we have similar playstyle we don't need to roll if some social skill works. Well, some "sense motivation" roll sometimes, because we aren't in that world, so we can't see their body language etc. Too random to try to spot something peculiar in dm:s acting.
But skill needs to be taken in account and character stat, otherwise is just us doing persuading to each other.
When group is unfamiliar or social playstyle different between people it's easier to roll the dice. Also, if social situation is something we consider totally boring, like haggling for prices (though some people enjoy that stuff, we just aren't those).
We kinda always had some sort of rolls for those thing even when we played AD&D. However we do expect people to state out what they say/how they say it/and what they want. Not always roleplay that, but to know what is purpose of interaction so you know what actually roll for if it's one of those quick ones.
One of my groups is very in-game talky, and another not so, and bad habit of disturbing the game with totally unrelated off-game topics.
I used to play in this big group where socially better people had much more play-time. I am socially able that way too, but kinda like to side with more silent ones. Hey, they had many cool ideas, often very interesting characters too, they just were not in habit of yelling over the self-loving pratters. And that group was 12+ "real roleplayers", uh I wish they had talked less and rolled more. This is often problem if people's ability to be social doesn't include public speaker skills and some have them more. It's not fair, and it has nothing to do with characters. This is toally meta-game competition and dice rolling intruptions are also good way to spread the turns, not just combat turns but also social ones.
I can understand very well social skill rolling be disturbing if it changes usual play-style that worked for everyone.
Or if people tend to just roll with any futher explanation.
I mean situation like:
DM: guard stops you "halt, he says, what is your business."
player: 17
DM: what
Player: mmh diplomacy.... no bluff it's my better skill so bluff 19
DM: ?
player: did it succeed
DM: What are you telling him
Player: some bluff-stuff, what is the target number?
I do hope you have lsser problem.