Yes it would. You should put some locktite on it. There really is anything that will stop it from vibrating out. You can probably loosen it easily with a screw driver wouldn't hurt to add some security of thread locker.

I was going to do jb weld as I figured that might be better than some thread locked but will grab some red thread locker if that the way I should go.

Thread locker usually releases with heat. Might be better to "peen" it in place. Deform the threads just above the plug so it can't back out just from vibration, would take force to get it out.

This is a good idea, but one would need a reasonably short plug then, so that some thread(s) would be exposed.

Again, pipe taps are tapered. Just tap a little deeper

my plug is pretty short, can take a picture when I get home. I assume I use a finish nail punch to peen the thread?

Any punch that can get in there should work, a finish nail punch should be perfect.

I was more concerned about the depth available to tap into, as others mentioned the port quickly curves.

I was following what you were saying Sal, I will let you know if that becomes an issue.

If the pipe plug sticks out just remove it and grind the head down. The square drive is pretty deep so it shouldnt be an issue.

Well it's done? It's hard to see what you are doing at the back of the engine so it seems it went in a little crooked, if it went in strait I think peening would have been fine.
Mine also pushed out a little of the aluminum so I hammered it back in which made it flush and worked the same as peening would so happy with the result.