No it is not.
I tried E6000 on a Leupold DeltaPoint Pro on a Staccsto and it failed. I know others who used “more” and destroyed optics.
E6000 is not a reliable solution. At best it works for the individual with their specific choice of optic platform but to adopt it as a policy or to recommend it as common practice… I can’t
Add to that we’re talking about the very small screws to a battery door/tray and I’ll continue to use the products designed for and proven over a large sample size to work on screws such as Loctite 248.