Re: Which begs the question
Actually it may well beg the question.
The OP states that the the OS is full of holes and then asks why more exploits have not been seen.
There is an implicit assumption regarding the number of holes in the OS and this is used as a premise to question the number of exploits. We do not know that the OS has a larger or smaller number of holes than any other OS to the OP is begging the question in the formal sense; we have to accept the conclusion that there is a large number of holes in order to ask the question.