That is the guise to which they are pretending to want to do it.
Careful now richary, you don't want to start sounding like a certain conspiracy minded little bird from a certain era. ;)
If it is automatic then there is even more chance of false positives and the opposite.
As Darwin and Dawkins might say ... "adapt or die".
But seriously, folk who find their sites being false positive affected will soon change things so that they don't.
Speed hit ? Will any of us notice if this sort of thing is rolled out with the promised faster notwork ?
regarDS