Dommes: should males be allowed to self-stimulate?

Here is the situation: a male having his orgasms controlled i.e. denied until the domme says so.

Should the male sub be allowed to edge in private, thus maintaining a high level of need, or should he be prevented from touching himself?

Supple

My subs are not allowed to touch themselves

I would absolutely say no! In my opinion males are only allowed to edge under supervision.

My boys aren't allowed to touch themselves and I usually make sure of that thru a chastity belt of some sort or restraining him to the bed. That way when I do allow them release, they appreciate me all the more.

No! That little dickie is the sole property of the dom, hands off. If he cannot control himself put a very strict chastity device on him the use the paddle daily for a week.

As a sub, perhaps I should not be allowed to comment.

My view - if the domme is choosing to control sub's orgasms, then the sub should be prevented from being physically able to masturbate. Restraints, chastity devices, padded mittens, and so on should be utilized appropriately.

Back when she liked to domme me, my wife didn't mind if I relieved my own genital discomfort, but she sure didn't want me to relieve my own tummy discomfort. Often, when leaving the house, she would explicitly forbid me to give myself any rectal treatments of any kind. Once I was pretty uncomfortable and gave myself some kind of rectal laxative. When she got home, she found out (I don't remember how, exactly). She punished me with a pot of senna tea, given over a two hour period. The next day I had the most interesting tummy ache for hours! That taught me not to try to resolve tummy discomfort alone.

Dommes: should males be allowed to self-stimulate?

Only if they have been a good boy and have endured all that I want to give.

It would be a reward.

Absolutely not. Locked away in chastity and only allowing the belt to be removed when he's otherwise heavily restrained.