These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Growing the Beard: His early episodes focused on picking on bad lyrics and the Fridge Logic of the songs. Over time however the show became more about analysing the messages of songs as well as discussing the social context of the messages portrayed, while poking fun at bad lyrics was toned down and given it's own separate segment in "Top X Worst Lyrics I've Ever Heard".
In the "Top 10 Worst Lyrics I've Ever Heard...This Year (2013)" video, he pokes fun at Migos referring to doing cocaine as Hannah Montana by making up a song that goes "The Wiggles, The Wiggles, The Wiggles, The Wiggles! When this song comes on, it makes her ass do the wiggles!". Bizarrely, Jason Derulo would come out with a song that would refer to Shaking the Rump as "Wiggle" as well.
Lampshaded when it comes to his review of Swimming Pools. At the end of the review, he laments that the song has not achieved mainstream success. At the end of the next video however, he points out that the song did become popular, charting well between the two videos, thus making his previous complaining pointless.