To help get on topic I have a few points to say:
1)A trope is not sexist. A trope is simply a categorized tool in writing, and is not inherently sexist. It's use may be considered sexist, and it may be created by a sexist group, but that does not make the trope itself sexist. Also every trope has an inversion, and for every (warning: tvtropes)
Damsel in Distress trope out there there is a
Badass Damsel trope out there as well. Just the use of the damsel in distress trope is not enough to categorize something as "sexist", it is only when that trope is used in specific ways and with specific other tropes that the entire combination can be applied that label.
2)If you want to change something, then you should create information on how to enact the change, not information on how bad something is. Right now her videos appear to be a bunch of jumping up and down and screaming "this is horrible, I hate it and you should too" without providing any solutions. If she really wanted to solve this problem she should create a video series on how females can get into the gaming industry, or a series on plots with strong female characters, not one on how the industry is terrible (and thus potentially eliminating future female programmers). Even the right for women to vote wasn't won through a bunch of women grouping up and saying that it was horrible that women couldn't vote; it was won by a group of women saying that women deserve the right to vote and then doing something about it. As the old quote says, "Offer solutions, not problems".
3)Currently the "proven" video game making technique involves the use of what have been termed "sexist" tropes. Venture capitalists and successful video game enterprises are not fond of statements like "revolutionary" or "radical" other then as hooks for their new copies of old ideas. They are much more fond of statements such as "tried-and-true" or "proven to sell". Yelling about how horrible a situation is will not cause change, so until such time that somebody goes out there and creates a game that is successful
due to the interest of female gamers, the majority of companies and those in power will not be willing to spend their money on it. Traditional methods will always win out over new ones until the new ones are proven to work as well, do to humanity's general "if it ain't broken don't fix it" methodology.