I can't argue the multitude of reasons to hate M$, but the fact that a free service they are offering doesn't play well with their competitors products, and that they did not spend enough money to ensure that it did seems a bit over the top. That they bothered to even ensure/provide that it functioned at all seems sort of a good thing, let alone tuned it to run well. Do you think Chrome(google) or Apple is less invasive on the privacy side ?
As for "could not afford to buy a Linux computer", I've never seen one myself either. Plenty of intel/amd hardware running Linux, lots of Solaris, Tandem, DEC, IBM, CRAY, and even some RedHat branded hardware, but never a Linux computer.