That is sad and lamentable. I bewail the fact our own church, though built over the top of old coal mines, has very few ex-miners in the congregation. It has school teachers, bankers and accountants and we thank God for them, but we have little impact on the former mining areas. Some very difficult and angular people get into positions of church leadership. Little people who would never have any position of importance in the secular world become little popes and dictators in the church, loving the power and pre-eminence it gives them.
Aggrieved relatives carry family feuds into the fellowship.
And, bless their hearts, there are the kind of people who are just plain odd. Every church should have them but some churches have more than their fair share. Obviously we must care for such people but it can be a problem. And it is often the case that it is the awkward, difficult, angular odd people who have caused the decline who actually survive the longest in a dwindling church. Most of the normal people left years ago.