My dude, before HTTPS, anyone could go to a Starbucks and skim every customer's Facebook session with a free Firefox extension. That's not an "edge case."
I even remember running some prank app on my Android that MITM-ed everyone's connections and started slowly removing letters from the website or replaced all the images with cat pictures. It worked super well. That could've have been more than 10-15 years ago.
Things have improved significantly with HTTPS adoption.
Things have improved significantly with HTTPS adoption.