It's possible, but if he was doing that at the time, he was keeping it to himself. Although when Google Glasses hit the streets (kind-of) most people knew what it was and it actually was a barrier to entry for many situations. Most of the people I know who got them eventually relented and realized they had to just take them off and put them away for many situations like meetings/bathroom/public-non-tech-conference-places.
Google Glass video also has a cheap-stink about it, and would have been loaded with metadata. So if it's out there, I imagine we would have found it by now.
But I remember Yaniv was basically a conference pariah. He would sign up, attend and attendance would lead to invites to other conferences. That may be how he got some really basic products to review. Some companies offer their products at these conferences for tech-reviewers because they believe it'll make their products sell better.
Most of the conferences had to do with marketing one's self online and really basic stuff like payments and online purchases, products, and writing style. They even trotted out the odd 'con/tv/movie celebrity occasionally.
If you take a broad look at the attendees of those things, many of them started strong with almost identical presences on the net and then vanished when they realized they had no marketable product or persona. They weren't tech people per-se, but they got enough education to operate the platforms others told them they needed - even if they really had nothing important or useful to say. But they still became "experts."
Some went into retail (ie: worked at local mall), some went back to school, some ended up travelling (and their instagram posts petered off,) some moved back into their parents' basements, some got jobs flipping burgers.
A very small percentage are still marketing themselves. For some, like Yaniv, it was a great introduction to grifting.
The gender thing is just another, newer tool in his toolkit. He just re-used everything he learned about marketing himself and applied it to gender and equality.
When he has to type/think for himself, he really doesn't have much to say other than "OMG, Go away Troll."
Fuck, man.
Since Yaniv's notorious for photographing young girls whenever he gets the chance, I've always assumed the Google Glasses were used primarily for recording them without their permission.