If anything looks off, ask your rigger or call up the manufacturer with any questions you might have. Or, just do like most skydiver and go “meh, yeah, it’s fine, I’d jump that, I’ve seen worse”. Oh and if you are going to be a bonehead and jump sketchy gear, by all means make sure to have your Rockin Memorial all planned out and good to go.
And yes, the methods shown here can be used on non-PD canopies as well. Anything made out of nylon really, including your tent and sleeping bag – and seriously, you’ll want to inspect those things before hitting up the next boogie, just in case any contamination from last year escaped cleanup at the end of the season.
Enjoy watching, and boy, that PD kid sure can move fast!