I had no hair removal down there with mine and have zero problems post surgery. But... I don't know if that's because I'm lucky and not very hairy down there or that's standard for zero depth. Best to ask a surgeon at your consult.

It doesn’t. The reason for hair removal is when there’s insufficient penis material, for example circumsition. the surgeon uses part of the outside scrotum to make the canal.

No.

I believe there there's two cases where you need prior hair removal for full depth SRS. The surgeon doesn't do it during the surgery, or they do but its not 100% reliable (which is essentially all normal penile inversion surgeons).

For zero depth if the surgeon doesn't remove it I think it would be necessary to do so beforehand, but it probably doesn't matter too much if you have hair inside as it's not going to be deep or difficult to access for electrolysis. Better ask the surgeon though.

If you find out could you comment here as I'm adding this post to the wiki.