Drop rates?

Can't speak to it with any evidence but it seems that every time you get close to completing a threshold on any farm. (Stacks of 50 for kyros)

The drop rate drops significantly 

It's called a bell curve.

47 Attempts @ 20%  =  9.4 on Average

AVERAGE.

A range from 0-47 is entirely possible.

I've had farm days where I did 40+ sims & got 0 so 2 is entirely possible.

Without evidence this is just a conspiracy theory with a sprinkle of confirmation bias.

If this was true, evidence would back it up. If there’s no evidence, it isn’t true.