Just as a rebuttal, I’d like to mention that it is because Avast does not have such a bypass feature, many of Avast’s users are kept safe. (Probably from themselves.)
Most users depend on their Antivirus program to keep them safe. They aren’t “experts”. Even experts have been fooled more times then they will
ever admit. Putting the decision of what’s safe and what’s not directly in the hands of the experts at Avast is the right thing to do.
I will admit that in the case of the false positive this decision at times can be a bit frustrating. It is still the right decision to keep the customer safe.
As an Avast user since 2003, I’ve seen both false positives and brand new viruses blocked by Avast. The false positives have always been rectified
in a reasonable time frame. The blockages of brand new infections of all types have kept my system well protected.