Yes it does; she entered the mainstream and impacted the gaming industry on her persona as an inside video gamer. EA took note of her notes in production of Mirror's Edge 2, and it is going to be interesting to see what EA does next [keep changes, backtrack all over the place?]. There is also the moral issue on the fact that she profited off of a social movement greatly, based off of a lie, when she could have honestly just started off from the start with a select few examples in depth, also learning on her own way.
These both amount to "She may have bent the truth as part of her Kickstarter" (she may have also gone off videogames for a while and picked them back up again after that lecture, or bent the truth in her lecture in order to try and illustrate the point she was making). I don't see how it matters. She still delivered the product she was promising, and the validity of her arguments aren't affected by whether she played video games a lot or not before making the series.
However, more to the point, you seem to be dramatically misrepresenting her original pitch. "I am an expert on videogames" (or even "I am someone who really likes videogames") wasn't a core element of it at all.
Her Kickstarter opens with "I love playing video games but I’m regularly disappointed in the limited and limiting ways women are represented". That isn't incompatible with what she says in the lecture - she enjoys the gameplay in videogames, but doesn't like them due to the male-dominated nature of them. She calls herself a "gamer" in the next paragraph, and then that's it. That's all the "insider knowledge" she claims to have.
She also says "I will be researching and playing hundreds of titles from across the gaming industry". This makes it perfectly clear that she has no specialist knowledge (or even prior knowledge) of the games she would be talking about in the videos, which is why I find this accusation so totally meaningless.
Then there is also the allegation that she used other people's footage without so much as crediting them, passing it off as her own; i.e. plagiarism.
Those allegations aren't explored in the video at all. If it's true she should certainly have credited them, but I don't think you can reasonably claim ownership of a video of someone else's game.
Simply put, many of the criticisms lain against her have now been emboldened if what is seen is true. Those saying she avoided games that satisfied her goals, or was blindly stumbling through games she had little knowledge of, choosing games heavily outdated or even completely warping in appearance order to further her argument - would be right.
I don't think those criticisms are affected at all. Being a gamer doesn't mean that you've played every single game, so it wouldn't stop you from avoiding games that satisfy your goals or not really understanding the games you're critiquing. Particularly since she made it clear she was going to be playing a lot of games for the first time as part of the project.