The hidden trick with hinge pins isn't the pin. As mentioned, it's fairly easy to pull the TE off with a pin through an unglued hinge. It's usually balsa after all, and if the pin has little diameter it can actually cut it's way out depending on how weak the balsa is.

The same hidden trick is why flat hinges have holes in them.

The holes in the flats and the hole you drill for the insurance pin both provide a sure way to get glue back where it needs to be.

Develop your hinging technique and you'll probably discover how to glue hinges so they won't need the insurance pin. How do you find out how good your hinging technique is? Autopsy your crashes. If you aren't going to rebuild the sucker, try to pull it apart. Like, try to pull you hinges out. If you can't, don't worry about the pins. If you can, then maybe you need to drill that hole for a pin, but try to do a better job getting glue inside that hole than you got in the slot when you assembled it.

I always looked at my crashed planes as good opportunities to see how well I built the suckers to find which of my techniques sucked. Of course, some of them I looked at with a tear in my eye.......