It obliviously is difficult, because vaxxed folks can and do get infected with the CCPvirust and do transmit it to others. If weekly testing unvaxxed makes sense (which it clearly does not), then the vaxxed must be tested weekly under the same reasoning. To do otherwise is nonsense.
Yep. Even if the population is 100% vax'd.
... and if they test both the vaccinated and unvaccinated, then the unvaccinated heathens go unpunished by their wannabe masters.