[jerheinze]

In any case, using Tor is better than not. "We have plenty of academic research and mathematical proofs that tell us quite clearly that the more people use Tor, the better the privacy, anonymity, and traffic analysis resistance properties will become."

And in the examples you gave, a Qubes OS+Whonix setup would've prevented those exploits from leaking the IP, unless the adversary has a Xen exploit.