I'm not an expert, but my understanding is that encryption that is E2E in 99.9% of cases is, definitionally, _not_ E2E, as it is no longer required to be at eit

I'm not an expert, but my understanding is that encryption that is E2E in 99.9% of cases is, definitionally, _not_ E2E, as it is no longer required to be at either end point.