Well everyone may be different and all but: some things taken to extremes are just plain foolish.
I would be LMFAO at those cuaght in this plight, but as a submissive to me its just not funny.
Ive been up and down on the whole cum denial game with several different so called dominants, and frankly imho its so old hat it bores me to tears and I dont even bother entertaining the idea of submitting to those who profess to follow this line of thinking.
It is most certianly not everyones cup of tea, nor should it have to be the "defualt setting" for handeling a submissive's needs.
In fact I think reliance on this method of control (as a punnishment or otherwise) most often stems from insecurity, lack of imagination, and or sometimes plain meaness on the dominants part, when it comes to this.
As Aristotle once said, everything in moderation. Cum denial for months on end isnt moderate.
I bet no dominant ever goes even a week let alone a month or more without an orgasm if they have anything to do with it.
One may also wish to keep in mind that if one were to deny a submissive's physical and mental needs (such as being rewarded with an orgasm on occassion for instance) for too long; one may find themselves "sans sub" or holding limited "false" dominion over a sub who seceretly goes elsewhere to have those needs met.
D/s is a two way street.
If the needs of all parties are not being met, someone is doing somthing wrong.