Adesanya has been tested 10 times this year and five times in the last three months.
Neither his vascularity, skin tone, amount of muscle nor the fulness of his muscles have changed in the slightest.
It's most likely from something else, there are lots of reasons why someone might get gyno that have literally nothing to do with steroid abuse, be it weed, antibiotics (Izzy had staph going into the Romero fight) or any other issues.
The way Israel talks about confirmed PED wouldn't be consistent at all with that of someone who uses PEDs himself either.