Are Quanzhou people very exclusive?

In fact, I feel that this kind of exclusion refers to foreigners, but it has gradually faded, not as serious as before. Except for some non-urban towns and villages, everything else is fine. After all, it is relatively civilized at work or in other places now. As for getting married, seriously, it's similar to what the fourth floor said, because some people really won't, even if they have the same surname, if one is from Quanzhou.