You're missing that Chrome has this built in to the context menu. My dad has been sending me links like this for years now, they just haven't worked for me until this month because I use Firefox.
I'm assuming Firefox has this context menu feature on the road map as well, though I suspect it will be a long time before Safari adds it just because Apple.
The average person doesn't even understand a URL at all—as far as they're concerned they're generated by computers for computers and are copied around with little regard for what the various components mean. This feature doesn't change that, it just gives a new way of creating a URL that does something slightly different.
