I cannot comment on the number of FP since I didn't test them. I can comment on VS where I don't see that many at all.If you have more false postives you will detect a lot more malware too.
A user should be able to decide if he wants the additional possible protection from AI or not and if yes leave with the alerts and learn how to deal with them.
Now we have between 300k and 3M new malware/day, I think this number will only increase in the future.
Signature detection does what it can, BB, Hips etc do also their part....AI or other protection/detection mechanism will come/evolve and help detecting what the other lines of defense didn't.
Who wants higher detection/protection has to take some possibles "side effects" into account at least until the advanced mechanism is not mature enough..then a new one will be developed to allow again higher detection or the detection of missed samples by the "standard" security products/mechanism....and so on...