I think your problem with Amber Rudd is really just that you disagree with her view on how much access the government should have to people's communications. I don't see how any of your points have much to do with how much Amber Rudd knows about encryption. In fact, a lot of your points seem to be on the broader topic of government action in response to terrorism and don't have much to do with encryption at all.

As far as legislation is concerned, remember that there are many many people who work on drafting any given bit of legislation. Amber Rudd would not be doing it by herself.