I know, but functionally a gecko eating an avocado and a gecko being fed an avocado are the same thing. I know you didn't get a gecko to 6 years by feeding it random plants 🙂
I'd like to tell you to go ahead with it, but I don't know enough to judge.
I was curious, do crested geckos even nibble on plants? Could you just pick off the fruit as it comes? (I don't know if the rest of the plant is toxic.)
: This may help: https://homeguides.sfgate.com/make-a...uit-44718.html
If your tree isn't super old, it may take awhile before it even gets big enough to bear fruit. I didn't find anything related to whether or not it can grow big enough to bear fruit in a viv. I don't know if it's ever been tried before. I would bet it wouldn't.
Maybe you could try it for a few years and, at the first sign of fruit, prune the shit out of it.