The problem is that YOU judge this as bullshit - but the guy who posted it evidently didn't.  So it's your opinion against his.  It's rude to presume that you are in the right to such a degree that nobody else should be allowed to read what he wrote - we don't need you to censor our incoming mail for us!  If you delete that material then you are denying the rest of us the right to make up our own minds and either (a) support his view, (b) suggest ways to compromise or (c) point out where he's wrong.  As WP:TALK says: "Editing – or even removing – others' comments is sometimes allowed. But you should exercise caution in doing so, and normally stop if there is any objection." - this is a pretty rare thing.  If it's bullshit, then other right-thinking editors will agree with you.  You say "it annoys me having to read it" - but you had to read it before deleting it - so that's an entirely bogus argument.  So, please don't delete other people's post again - except (perhaps) in the most egregious circumstances and only after some discussion on the talk page.