Just because your friend has a low opinion of those people does not mean there are incapable. Maybe they are at the meetings he does not attend. Maybe they are getting trained at other times and locations.
And, maybe we have just never come across the unicorn yet, but it's really there.
The question wasn't about capability, it was about actual performance. Meeting attendance is not the question, it is actually running calls.
If they're getting signed off for training when they don't participate, why would they go to other training?