Dosen't really matter
I've noticed folks have been trickling in edits but since SE dosen't actually have those sites on HTTP, and things are redirected, changing http to https in links is basically just window dressing. It dosen't do anything - its not considered mixed content , and just makes things look nicer.
I ran a quick check of what the certs for MSE do, and what the settings are -its a screenshot but you can generate your own tests here
We have HSTS
One of the nice things it does as per the wikipedia article...
Automatically turn any insecure links referencing the web application into secure links. (For instance, http://example.com/some/page/ will be modified to https://example.com/some/page/ before accessing the server.
Which is shiny, and means that no http only connections work. It also kinda fixes what folks think they are fixing by editing http links into https.
Since there's a 301 redirect from http to https, they both point to the same place and you will hit a https site in either case.
I don't think there's much point fretting over this.