[bduerst]

That's definitely a big part of it.

For a social network to have value, you need users who are compelled to frequently submit content. By adding a power structure, users have to evaluate their decisions, which can generate anxiety or extra work, leading to a drop off in contribution rate.

It's one of the reasons teenagers ditched Facebook once their parents joined.

[daedecai]

Do you have any data to back that up? Don't mean that in a snipey kind of way. Fascinating observation.