I was in Stanford class of 1994 - which means, yes, I started in 1990. And, yes, we barely knew what real "email" was, since pretty much no 18 year old in high school had it. I had been on BBSs for 4-5 years before that, but at that point for even the leading edge outside of academia it was private BBS or CompuServe, etc.
By 1994 email was ubiquitous, Usenet was already long in the tooth, the Mosaic browser had been released, and we all had wired Ethernet in our dorm rooms (which still was definitely NOT the norm for college campuses - but it was nice). I wrote the first TCP/IP driver for DOOM so we could play multiplayer in the dorms once they blocked IPX after the initial DOOM IPX driver killed a lot of campus networks ;)
Anyway, the point is that range of 1990-1994 was in fact one of the critical periods for those developing the *commercial* Internet, and Stanford was at ground zero of a lot of it. And another point of the article is (if you read the whole thing) while at Stanford, Peter Thiel and David Sacks were not just the total dicks described in the article - they were WORSE. They basically started the Stanford Review to counter/insult any effort at racial or gender diversity/progress on campus. Even they apologized (according to the article) for the crap they wrote at the time (and Thiel came out of the closet eventually) and at the time it was BAD...
All that being said, the title of this slashdot post is FUCKING STUPID. It's in NO way what the article said, and as you know it's ridiculous to claim tech or ANY OTHER gender gap in business, engineering, or whatever somehow started in *1990* (more like 1790? 1690? 1690BC?) or at a single location...