I dont see anything wrong with it. It sounds like a 4 cylinder with a lot of backfiring engineered into it which is what FP said they were going for. It can only get so good for a 4 cylinder when it comes to sound so it sounds good to me!
Sounds good man, I still kinda miss my 2016 RS, I bought one right when they came out. I did a full muffler delete, it was stupid loud, I like the bypass mod a lot more.
My 2008 Cobalt SS had a 3" straight pipe from the turbo back. While it would not sound that good on video it was ignorant in person. The thing made 318whp and 389wtq while having the turbo spool of a powerstroke at part throttle.
Having said that. I'm sure the RS sounds much better than the video lets out.