Complex sentence: Harper also uses Youtube videos to help convey his point, such as Where in the World is Nikola Peković, and also enjoys "slamming" comments, through showing his dislike for those comments that come off as unfunny and poorly written.
Split into simpler sentences: Harper also uses Youtube videos to help convey his point, such as Where in the World is Nikola Peković, and also enjoys "slamming" comments. Harper "slams" these comments through showing his dislike for those comments that come off as unfunny and poorly written.