I looked up the “Peter Principle”… it’s interesting (and kinda funny), and maybe applies here.
I finds the following argument(s) pretty convincing:
https://www.reddit.com/r/exjw/comments/17a98ap/the_gb_believe_it_all_a_walk_through_gb_delusion/
https://www.reddit.com/r/exjw/comments/17a992f/the_gb_believe_it_all_a_walk_through_gb_delusion/
https://www.reddit.com/r/exjw/comments/17a9hrl/the_gb_believe_it_all_a_walk_through_gb_delusion/