I think you are overblowing Slashdot's biases a bit. I just did a google search and found many articles on Slashdot referencing Gamergate, people invovled, and its issues over the past years. I ended my search after finding 12. I didn't find any editorials which I guess is what you were angling for...
Here's a couple quick ones:
As to your women in STEM complaint... that's a story which does come up often. I've read many articles posted via slashdot listing one potential cause or another. Here's a post which blames ad's in the 80's.