If the person you're replying to is going to flag it based that vague criteria, they might as well flag much of the front page. One should start finding better articles and submitting them if they believe HN is lacking what they perceive it to be proper content.

I will vote something up is based on the quality of the article (whether it's technical news or not), if it has not already been submitted recently and if the article will lead to an informative/intellectual discussion. If it only has one of those criteria, then I'm less likely to upvote it when there's other articles that meet two or all three criteria.