I'm perfectly fine with the idea of lets players on YouTube, and there are plenty of lets players that I can easily tolerate. I'm a fan of Markiplier, and the idea of a lets player on the internet makes sense, if they can make their content very entertaining and enjoyable. However, I don't fine much enjoyment in this series.
Every now and then PewDiePie makes a good joke and brings new light on an indie game (benefitting the creator greatly), but, most of the time, I just don't find him very funny. He tries too hard to get a laugh out of his audience. Some people find him funny, but I just find him loud and obnoxious. He overreacts so much and you can just tell that he wants to make you laugh but he is just going way too over the top. When Nicolas Cage goes over the top, it's funny, because it isn't really intentional, but when PewDiePie goes over the top, it is!