So evangelion was right?

Jokes aside, the probability of moonlike-moons forming in earthlike-planets should be added to drake’s equation and see what that begets.

Might explain a lot of the silence, at least for life as we know it

The drake equation is a bogus probability that really means ultimately nothing. I would put stock in anything it says.

Why is that?

The Drake Equation was not really meant to be used. The original purpose of the Drake Equation was to drum up conversations surrounding the first SETI. All it really did was condense everything someone should look for in a possibly human habitable world where aliens may exist. We have much better ways to calculate and search now.