Here's the thing, he is, absolutely, one of my favourite actors.
But his character was crap. He had no depth, and was completely underdeveloped. Keke's character was far more fleshed out, and in an annoying way! Even the IT guy was a better character, it was so odd. The whole film felt like a mish mash of different ideas from Peele, one minute it's horror, then satire, then Western, then Hollywood blockbuster, then sci-fi, and none of it ever came together to form anything memorable, really. Stephen Yeun was great and so was his character (and that sequence and flashback), that's about the best thing I can say about it.