you're telling us that one of the benefits of using action="POST" instead of action="GET" is that the form values are encrypted inconjunction with https. I guess this is not true as form values should also be encrypted with a GET request.
https does not only encrypt the HTTP body, but the complete HTTP data stream as it sits inbetween TCP and HTTP. So this includes not only the HTTP body but also the HTTP header (very first line of the HTTP protocol) which contains the URL (with all the form parameters in case of a GET request) as well as all HTTP header fields.
At least this is my understanding of the matter.
Besides that: Thanks a lot for this great and delightful series. You're videos are fun to watch, very informative and well worth the time watching.