I agree, someone has to tell a brewer when they did it wrong or they will do it wrong again the same way. OTOH, that same brewer shouldn't be entering something that has a finish akin to sanitizer in any competition. I've tasted a lot of these and brew exchange meetings, etc. That's a good venue for it because you're among locals, club members, perhaps friends who can not only critique, but provide guidance on how to correct the error(s). I wish I'd done something like that with my first extract kits, it would have sped me along a little quicker.
It is possible to constructively criticize respectfully. But yeah, the subjectivity aspect is the elephant in the room.
Hey, doesn't
@Bigbre04 like to check the reviews in Untapp'd?