The % to Desynthesis is broken?

[Claire_Pendragon]

That's not what they said. They said without a generator. i.e., it's not the generator's fault.

I don't beleive you understand how RNGs and Dice work.
They both have a set outcome, that the outside party can not predict w/o knowing all the factors ahead of time.
What they are suggesting is the "Random" with dice, is any different than "Random" from a RNG. (While also saying a Die is not a program called RNG, which is obvious. But I cut that part out, as its not what they were focusing on.)
Random remains Random no matter the source. It wouldn't be random to you, if you knew the outcome. (Something can be random to me, but not to you, at the same time.)

By definition, you must not know the outcome ahead of time, while it still has a predetermined outcome.

Most people think the word random means "It can be any end result, and if you go back in time, redo the event, a different outcome will happen". Which is NOT what random means.
(Last I saw, there currently is no word for such an occurrence, part of the reason people think that's what random means.)

A RNG and a Die work almost identically.
There are preset numbers that can be reached, and a trigger to pick said numbers. Be it a program, or a roll of the die.

You can not roll a normal 6 sided die, and get a 7. THAT would be the type of "random" they are suggesting.

You can get the same result without a generator (as an example with dices)

This statement is true. (Die and RNG fundamentally work the same.)

It is not the RNG, it is the randomnes of chances between 0% and 100%

The RNG determines the outcome, but they are suggesting its not the RNG (Which is "random") but instead, It is "Random". Which is why I said, their statement makes no sense.