Whether you are cut or uncut, if the frenulum is present, they just pierce to one side or the other of it. I am cut, and still have a frenulum, so I'm pierced just off to the side of it.
When I was referring to self stretching, some guys have a PA hole that will stretch by itself over time. No tapers, going to the piercer, ptfe tape, or other methods needed. Just wait for a few weeks, and drop in a bigger ring. The downside to this, is it never seems to stop and ultimately results in the need to stop wearing anything in the PA, or wind up with a meatotomy.
My PA is not self stretching, so I had to stretch the hard way. The upside, is it is stable and will be with me as long as I don't manage to hook it on something and yank hard enough to tear it out (yikes!)