Composite Video on the NES: Why's it so wobbly?

The missing dot is not just a thing that helps stabilize the colors in a picture, it's literally a missing dot. The first scanline is literally twitching left and right by one pixel every other frame. You probably can't see it on your TV without messing with the vertical hold.

Growing up I definitely noticed the wobble.

But I'm also so used to it that I didn't realize a lot of examples were videos.

Really interesting investigation!