flying obviously isn't your forte".
That is destructive, and it implies that his present standard of flying is permanent!!! It's not just confidence-shattering - it's totally unhelpful. Examiners - and anyone who teaches anything - should learn the difference between telling a student that something is imperfect and needs work, and saying the person is bad at it (with the implication that they can't improve).
IMHO, People like the one you mention shouldn't be examiners!!!!