Brandon Vander Hey’s review published on Letterboxd:
Popstar: Never Stop Never Stopping should be the kind of movie to expose at least someting about the culture its satirizing, and it doesn't. It's barely a satire of anything, really. What it does deconstruct is so obvious that it hardly deserves credit. Beyond that it's led by a "character" who is certainly amusing but whose shtick also doesn't stretch very far, even in a movie as short as this one. This is simply 80 minutes of non-stop gags and on that level I'm totally okay with how this turned out. It's very funny, pretty much from frame one to the closing credits, and if that's all you need there's no reason to be disappointed other than there not being nearly enough time with all of the Lonely Island guys together. Like, if we're gonna have a sequel to this or another Lonely Island Film as this has been branded, we need more time with all three of these dudes riffing and being charismatic in the same room. Maybe as actual characters? I don't know, but this doesn't quite cut it.
(Minor spoilers????) Highlights: "My nigger", Snoop Dogg's "Surprise Motherfuckers" show, the Will Arnett TMZ parodies/Mike Birbiglia in a legendary wig, "...fuck you like the US government fucked Bin Laden". Just a ton of great, quotable, hilarious bits that technically make up a movie.