I don't care if he appears to be a nice or a mean guy. I don't judge people by that criteria. My experience working in the academic research community has taught me that intelligent and busy people sometimes come across as mean, but it's nothing personal. I'm totally used to un-ingratiating people and I work with them every day; it doesn't affect me at all.
When he reports something he's heard, he just reports it, without the usual boilerplate disclaimers that it's just a rumor, or pro forma protestations about how he hopes it's not true, or most dishonest of all, waiting for someone else to cover it, and then covering that coverage. This sort of sanctimoniousness is so universal in established media that it seems shocking when someone just skips it.
I'm going to call bullshit on this one. How about you being reprimanded for asking "mean" questions at TechCrunch 50? Apparently Arrington wanted the boilerplate. I suppose it probably has something to do with the fact that it was TechCrunch's reputation on the line, not a company he was writing about.
Speaking of intellectual honesty, it seems hypocritical to me that you're willing to accuse TechCrunch of "outright fabrication" and "baseless speculation" and the best evidence you can produce is a 2 year old guest post by a Stanford student.
That's a fair point, but I don't really feel like wasting an hour of my evening digging through TechCrunch archives. I'll pull a TechCrunch and say that an anonymous source close to the TechCrunch editorial board told me. My original comment is about as well sourced as their average article. ;) Also, it's not hypocritical since I'm not earning advertising dollars from my words. I don't claim that journalism is my profession. If I was making money off of the words I posted to HN, I would keep track of my sources. As it stands right now, I'm simply offering an opinion.
EDIT: dfranke has some examples though: http://news.ycombinator.com/item?id=838197
EDIT2:
If you have any examples of "outright fabrication," let's see them.
Those words were chosen in haste and I wont defend them. You're right to call me out on them. I don't actually believe that TechCrunch is in the business of outright fabrication. If I wrote a popular and influential tech blog I would have deleted those words during the editing phase. :)