Sometimes. Cheap people are usually the type to want to itemize their bills. Therefore, these cheapo’s are likely to get seperate checks.
However, there are also lots of people like myself who are good tippers who might get a seperate check to avoid the complications of group billing. I’ve often been with a large group out where idiots want to itemize, others don’t pay at all, nobody can do math or take charge. It’s easier sometimes to just get my own bill. Or, at least, get a seperate bill for everybody at my table or a subset of the larger group.
The problem with large checks and tipping is that people are dumb. They don’t know about tax. They forget that they had five drinks, not four. They tend to underestimate thier bill, not overestimate it. That’s why the person collecting tends to end up with not enough to cover and have a good tip. Seperate bills eliminates this situation.
The tip is automatically added to large parties because the temptation is too great to not tip on them. When a 20% tip is a hundred dollars or more it can be tempting for some cheapskates to not tip just because of the amounts involved. This is moot if the checks are done seperately.