Funny, just heard PMU in RiR. Everyone's entitled to their opinion and tastes, so I don't want to invalidate other posters' complaints and criticisms, but JLB's performance didn't alarm me. Yes, there are imperfect spots, but I'd say he delivers overall. I'm of the camp that they don't necessarily need to include that song in their setlists because of how high it goes and how much it must strain a singer (I've tried it, and it does), but... isn't it a treat that they played it? I'd be psyched if I was there!
I might be still taken with the whole mojo of "we had no concerts for so long, there was a chance they could've never started happening again, the fact that this is happening is a miracle", so this isn't any objective opinion or anything. Just a sentiment.