So I tested the 3 of coins theory to see if there's any evidence that the reddit theory works.
In case you're unfamiliar, the theory states:
don't use the 3 of coins on the first 2 strikes.
Ignore the 3rd if it is the dust palace, as there are no ultras that drop exotic there
if the 3rd isn't dust palace, pop 3 of coins at the beginning of the strike once landed
I did this 3 times and it didn't work for me. I do admit my test is far from accurate since it's a very small sample size, but 3 for 3 with zero exotic loots kinda tells me this theory doesn't really work.
Video evidence:
https://youtu.be/rH2y4vwS_D0