I don't see much difference between mainstream news and pundits / bloggers, but I'll take your word for it. To be honest, I'm not really all that familiar with any of these sites and generally don't follow political news that much anymore if I can help it.
But you're overlooking the main point I was trying to make, which is that this particular issue (people receiving death threats / doxing etc.) transcends politics. Thinkprogress may be a left leaning political blog but you can probably find almost the exact same article posted by a mainstream gaming news site. All the article quote Felicia Day / Chris Kluwe and summarize what happened . So unless you're claiming that the threats / "doxing" of FD never happened, there isn't really anything in the article up for debate, is there?