Thing is as an accessibility and efficiency consultant, I have to go in as a leader. And a good leader never asks people to do things they themselves cannot do, or wouldn't get down in there and do alongside everyone else.
A big part of that consulting involves educating. These people are in trouble because they don't know how to do this stuff properly. Their existing coders don't know any of this, so I have to get in there and teach.
And the best way of teaching is by doing. Right there, with them. You don't just laundry list what's wrong, collect $100k and go home to sit on your ass. You roll up your sleeves and get dirty with everyone else doing the actual work.
But yeah, I've encountered far too many "consultants" who do nothing but flap their trap, vaguely imply what might be done, and collect the paycheck. In fact, I'd say around half my jobs the past four years has involved cleaning up after those types of 'consultants" as well.