I find it a bit sad that this comment has almost more votes than the parent post, which has several insightful points. This comment picks out only a single issu

I find it a bit sad that this comment has almost more votes than the parent post, which has several insightful points. This comment picks out only a single issue (although an important one), but does ignore all the other statements. I would hope people stop upvoting such a comment at 20 points max. I can't seem to find it, but there was once a comment or page by PG which explained the core of good follow-up comments: not picking out a single item which is easy to criticise, but rather responding to the core of the parent comment.