I think he might have meant 2x slower than without STM and not 2x slower than CPython. Also from everything I have read you would still have the option to not use STM at all and just use the GIL which would not come with the extra overhead.
That wouldn't be inflationary because no more money is being created. No matter how many times you divide that one bitcoin there will always only be one bitcoin when you add it up and thus would still be deflationary because it is still increasing in value.
If you take into account stock split and dividends for Microsoft, the total return from 2000 until today is about 13% which is not great but much different than the misrepresentation of a 60% loss. The returns would be much higher if you had not bought in 2000 before the crash which Ballmer could have had no control over. For example if you had bought shares at the end of 2002 than your total return over that time would have been about 130%.
I'm not saying that Microsoft hasn't missed opportunities or that Ballmer shouldn't be replaced but its not quite as bad as pictured in that graph.