I don't think IBM is in the same situation, though. Telecommuting works or fails based on a company's culture, work ethic, and employee accountability.
151% stock increase? Nearly double market cap?
I don't judge a business by the stock ticker, I judge one by their products.
The math that made the rounds was based on a faulty premise. You basically had what I'll call Yahoo Group (YG) comprised of Core Yahoo (CY), a stake in Alibaba (YAB) and Yahoo Japan (YJ).
People were saying that if you took YG and subtracted YAB and YJ, that the value of the remaining business, CY, was negative.
What they missed was that you can't just plop in the current market price of YAB and YJ. Yahoo's ownership in those companies was old enough that they would have to pay significant taxes to unload them.
So the real math would be YG = [YAB x (1-T)] + [YJ x (1-T)] + CY
Where T is the tax rate. Realistically, it'd be some Monte Carlo of the likelihood of tax rates as they were aggressively trying to minimize the tax paid, but still, CY wouldn't be negative.
As a final bit of evidence for this -- Yahoo's core business was just bought for over $4.5 billion. So.. you know.. not a negative number.
> the enthusiasm for tearing Mayer down comes from the fact that she was lauded as some kind of exceptional executive
While some of the comments are no doubt rooted in the perspective you mention, there are also plenty of overtly misogynistic comments about her too. I think it's a bit of whitewashing to claim that all the enthusiasm for tearing her down is strictly disconnected from gender. I don't know how you can read the comments that go by on reddit et all and pretend that elephant in the room isn't there.
I think a lot of the criticism of Balmer is specific and factual, but that people also overlook that on raw financials his tenure at MS was successful.