This...Everyone really should know how to do this. I know we all have roadside assistance (or you should), but I've been in situations where I had to wait 3 hours for a tow when my gf's timing belt snapped. Anyone can change a tire in less than 15 minutes.
Last flat I got, which was recent , I thought of Ralphie's dad in a Christmas Story when he had his wife time him like he was a member of a pit crew. LOL.
But also, many new cars don't even come with a spare.
That said, yes, everyone absolutely should know how to change a tire.