In short - it's only a problem for those who cannot or will not fly in accordance with the SOPs
I think you have answered the question, this a big problem in the Bizjet world some operators seem to think that the rules don't apply to a business jet AOC.
The sooner FDM is brought in across the board the better, especially with operators using foriegn bases were the crew disappear for weeks at a time doing what they want, or so they think!