You can't have HTTPS everywhere until we can get HTTPS for IoT devices. My router doesn't serve it's configuration screen via HTTPS. How could it? I have to connect to it to configure it before it's on the internet.
Same with my IoT cameras and all the various local apps I run that can start a web server. Heck, my iPhone has tons of apps that start webservers for uploading data since iPhone's file sync sucks so bad.
We need a solution to HTTPS for devices inside home networks.