I do think that the those who abuse the system represent a larger % than you do. I would put them between 2% and 5% of attendance. They are are a smaller % of total visitors, but they are frequent visitors and so represent a larger % of attendance (I think).
Even if we take your estimate of 1% lets do the math. The average daily attendance for the four parks is around 160,000, if 1% of the people are strategists using some loophole or technique to game the system that is 1600 people which is 4800 FP+s (that assumes they are not some how gaming the system to prebook more than 3). These are the most sought after FP+s in the system and they disappear before almost anyone can access them. Again, I sincerely believe that the number is greater by multiples. If it is 2% not 1% then we are talking about nearly 10,000 FP+s. Regardless, 100 is too many.
I apologize, I'll get off my soapbox now. I know my ranting isn't on topic, sorry Ryan.