An interesting moral position.
Choice between not getting paid for an hour's work, or being the name associated with what you consider to be a dangerously inept pilot being cleared to fly for another 2 years.
What a choice!
Widening this a little, has anybody actually found themselves up against this? I'm glad to say that to date (in a short and limited instructional career, to be fair) anybody I've suggested needs some more instruction to be safe, has accepted the point.
Maybe the dangerously inept pilot who won't take an instructor's advice is a fiction? Somehow however, I sort of suspect he isn't.
G