It happened every year in the '10s because Esports was still trying to become "a thing" in every single game possible, and the moment it did some Exec wanted to throw a marketing budget at it to try and triple his shekels.

All girl teams were a great "stand out" gimmick, but they were always either super cringe from trying too hard or fell apart within a few games because they had no actual skill in a very competitive environment.

Its honestly a great case study on how "entertainment" industries function in terms of investments, corporate interests, and many other factors. The female thing is just a flavor of a much larger constant issue.