I am baffled as to why this is a thing. I’m not a fan of Hammett, but this comparison makes no sense on any level.
If you watched it, you’ll realize it’s not a thing. There is no reason to compare the lead guitarist of a metal band with a rapper who happens sometimes play notes on a guitar. Both are tolerable at their main occupation. The video is also clearly biased – the annotations criticize Wayne while pointing out Hammett’s technical abilities, and the Lil Wayne clips are of terrible audio quality. Why does this exist?
Oh internet, you ARE a strange place.