I am not! The only clue I have, if you can call it that, is that I have been frequently posting links like that to a site in that way (i.e. without the https://) and this is the first time anyone has ever mentioned it. Maybe no one was ever clicking on my links!
Would you agree that one should not have to include the https:// in a markdown link?
I don’t see anything in the common mark standard that mentions it: CommonMark Spec