"I don't think there is a requirement to check this stuff at the license renewal. That's what's fundamentally wrong with the system."
No, nor do I.
My point was that if there are to be twice yearly renewals make their content as pro-active as possible. If you accept there are pilots "outside the system" then use this opportunity to ensure examiners bring them up to date on the issues of the day.
The analogy is with professional training. One of the reason why the professions have compulsory CPE is that it provides a good opportunity to ensure the "carrot crunchers" are at least getting exposure to the issues and concerns of the day.
In short, rather than whineing about these infringements or just prosecuting the pilot do something pro-active. At least be certain this sort of information is reaching the unwashed and unworthy. Then by all means prosecute if you will.