I believe it's better not to have posts like this, because it has a lot of irrelevant fluff that could be cut

Again, if you are suggesting an improvement, this doesn't clearly argue for not having posts that are not so improved. For this to matter, the post as it stands has to be bad, but its hypothetical improved version has to cross over into the "good" category. Improving relevance doesn't seem like a strong enough change to do this trick, it seems like the character of an adequate such improvement must be that of "fixing a damaging problem", rather than that of "making the presentation even better". You'd need to address this problem, otherwise all I hear is a fake explanation.