My answer to a proof verification question is about to be deleted. The only question posed by the OP was: "Is my approach correct?"
I made the effort of checking that the OP's solution was correct and told them that it looked fine. The closest thing to justification that I received was this comment:
I think your post could be improved with some additional explanation about why the user's approach is correct - perhaps doing the problem another way to confirm the answer, or more justification about what's going on, or something like that. The essential problem with these sort of "yes" responses to solution-verification questions is that it's just the word of someone on the internet for this with no backup or reasoning, and that's notoriously flimsy. I sympathize with your predicament ("it's clearly right!") and I'm not voting to delete yet.
I understand that this has been discussed on Meta previously here. But it is not made plain that answerers who do not follow the advice given by Quid should or could have their answers deleted.
Quid's answer appears to place more stringent standards on an answer given by someone with low reputation than high reputation. If it is felt that a confirmation given by a low-reputation user is not sufficient, then why can this not be achieved more simply by a high-rep user leaving a comment confirming agreement?
And what incentive is there for a user to verify a proof given by an OP if there is a risk he will discover that the answer is correct and therefore must add additional content, beyond what the OP needs and is actually asking for?
Part of what led me to give such a short answer was that I wanted the OP to have some satisfaction in a job well done. I didn't feel like picking apart minor flaws in presentation.
Is Quid's answer there still considered valid by the community?
Do you agree with the commenter that an answer that merely confirms that the OP's solution is correct (when that is what was asked) ought to be deleted?