I think it is probably more correct that she grew the value of Yahoo significantly, ~0 -> 4.5B

Accusing anyone who disagree's with you as being a sexist/anti-sexist or whatever isn't helpful.

I doubt that Yahoo worth negative value with all the engineers they hire and assets they control, without Alibaba's stock. From another perspective, she doesn't really bring Yahoo back on track, that market thinks it is worthless without Alibaba's stock. As a CEO and a high profile one, that is a definitely a failure.

That's not a matter of opinion. The worth of the company and the worth of the Alibaba stock it held were common knowledge, and subtracting one from the other resulted in a negative number.

The market value of the company almost always is not equal to what the company could sell itself for to another company - sometimes more, sometimes less. If you think the value of Yahoo’s assets were actually negative back then, do a thought experiment - let’s say 4 years ago Yahoo decides to sell the Yahoo assets to another company - do you think they would have to pay another company to take the Yahoo front page, mail etc? In this case, the board would have likely gotten much more for the shareholders by keeping Alibaba and selling the rest rather than hire Mayer. I don't know the numbers for sure, but with the security breaches, web site redesigns and inability to get ahead of technology trends, I think user engagement with the Yahoo web sites is likely less than when she started.