Why isn't there an effort to detect MITM proxies and post equally scary warnings? Surely users have a right to know.
MITM is worse than self signed certs and if 'exceptions' can be found for MITM like corporate security, management etc then the same exceptions should be found for self signed certs for individuals rather than creating dependencies on CA 'authorities'. This just another instance of furthering corporate interests while sacrificing individuals.
You can create a self signed CA and add it to trusted roots to avoid warnings.