He's not necessarily "forgetting" it and I wish HTTPS-everywhere advocates would stop ascribing forgetfulness or bad motives. Some of us have a different opinion based on our own genuinely-held beliefs.

Requiring HTTPS everywhere is weighing certain factors above others. For many people, encryption and consequent lack of snooping/MITMing is an absolute which outweighs all other possible factors. That's fine. You're entitled to hold that belief. But please don't accuse others, who don't hold that as a trumps-everything absolute, of "forgetting" or (like the guy upthread who said "You being against HTTPS everything, is the same as being in support of MITM attacks somewhere") arguing in bad faith.