The speaker up to about 1:30 says the local church "movement" was very living and exciting and positive basically, if not naive in the 70s - 80s and "no longer is".
I would say the local churches have not changed. He changed maybe. It is still exciting, less naive probably as we have been through a number of "storms". After 45 years it is STILL exciting and loving. Less naive, after having been through some things, for sure.
In those days I saw also people come into corporate living who stole and moved away.
In those days people came into the church life and left when they couldn't score on a romantic relationship. Sour grapes.
In those days I saw people come in who were ambitious for position. And when it didn't turn out their way, they left. Sour grapes
In those days I saw people come and decide their fun ran out. Big deal. Even Jesus had disciples who no longer decided to follow and withdrew.
That someone moved in a brother's corporate living situation and latter decided things were better doing something else, is no proof the local church life was bad.
I know a guy enthusiastic about joining the Marines only to leave after a change of heart.
People drop out of schools, relationships, marriages, friendships, companies, sports teams. This in and of itself doesn't prove much.
Did we make some mistakes in those days? Yes, we made some mistakes. God doesn't drop a move of the Spirit so easily because some offense happened or some mistakes were made.
Part of maturing in the Spirit is learning to forgive. I can assure you the speaker ALSO offended somebody himself along the way.