I agree, getting pierced at a large gauge will absolutely not increase your risk for blowouts and cat butt. You can get pierced at very large sizes but most piercers only have needles up to about 4G.
I got pierced at 10G and I'm glad I did because I didn't have to worry about tiny sizes. My holes aren't crescent-shaped (I've actually heard people say all stretched piercings will be crescent-shaped if they're done with a needle at any size instead of a gun) but the left one's kind of oval shaped.
If you get 10G piercings don't let them use rings. That was all my piercer had in that size and I was too impatient to wait for her to order other jewelry. So I was stuck with these big heavy rings for a few weeks until I got plugs and they really slowed down the healing process.
I have 1/2" lobes and 11 piercings: left helix x2, both conches, both nostrils, septum, navel, and VCH.
My lobes are small but I know a lot about stretching and how to do it safely, so message me if you have any questions!