Earlier quoted context omitted.
Let's Encrypt is Mozilla's reaction.
I'm not the most versed in encryption & stuff, so does Let's Encrypt prevents / subvert Verizon's HTTP modification? EDIT: ah it's supercookie[1] and apparently a full protection is "Only a VPN or Tor" [1] https://www.eff.org/deeplinks/2014/11/verizon-x-uidh
In each of these cases the traffic is encrypted, Verizon can read only gibberish and cannot know where to insert its tracking code, while with HTTP it sees exactly where the HTTP headers end and can add another to them.