I believe he was trying to ratio him (and he succeeded).

That behavior goes all the way back to the mid 90s in IE4 at least when everything was .com

Yup, I found about this when I accidentally clicked on such a link to PlayStore that was missing the colon and was confused when it didn't work and copy-pasted it in the address bar. I am sure it was just a typo on that website.

GitHub is full of similar typos in documentation and code files (74.8k results). I am not sure if there's a way to do a web search based on code and find "live" examples but I can't imaging there'd be a shortage of those either.

https://github.com/search?q=%22https%2F%2F%22++&type=code

Except this thing is opt-out and would put a whole lot of data on tens of millions of computers including things that were never stored by default (credit card numbers, reset codes, e2e encrypted messages etc).

Recall is a malware.

and now Google is barely returning any relevant results anymore :/