So I'm trying out the review queue again, looking at this post.
The system says it's low quality, and though I don't have anything particular against one-liners, in this case, the other answer on the question is clearly way more helpful, has upvotes and ticks, and this post has no upvotes, so deleting it isn't even going to 'harm' the author.
First question: would you recommend deletion too?
None of the canned comments really seem to express what's going on, there isn't really a generic 'low quality' comment in there. Especially not a 'too short' one, which is what most of the posts I've reviewed so far seem to have against them.
Second question: In this case, I've selected no comment. But do you think there needs to be a comment to cover this case, or is 'shortness' an insufficient metric of low quality?