I've watched all of the Feminist Frequency videos made to date. A lot of them I have seen more than once. In general, they are a bit dry, but well reasoned and researched. My biggest criticism is, sometimes, she overreaches.
In "women as background decoration" it's hard to draw the line between "world building" and exploitation. Although, it's painfully obvious that Triple A games are made for what game dev's think 14 year old straight boys want. In almost all her Video game trope videos, Triple A does it wrong, independent game does it right.
A bit off topic, but since her last video was more about rape... I was raped. It's a sensitive topic, and even the best writers, directors, actors, etc. can mess it up. I'm not even sure of the best way to handle it in a narrative, but "Law and Order: SVU" seems to be the best example. From the beginning, they showed more care and insight, than any other show, and certainly any game. Just throwing rape into a scene doesn't make it more "mature". Context is everything.