Don't pay that guy any attention. He's been spamming that same sentence all over the forums. Just report him. I've already sent him instructions about how to contact the mods/admin, but he keeps spamming that.
As for your banner and channel icon, looks cool, but it's not obvious what to expect from your channel from your banner. To me it looks like a gaming channel or a vlog channel, but the video Thumbnail seem to be from the Office tv show. Maybe add a tag line in the blank area that says "Funniest clips from the office" or something you think best describes your channel in a quick bite sized sentence to new viewer. Something that makes them think, "this is exactly what I was looking for".
over all I think it look great and I like the style, but I think the addition of a quick tag line would make it more functional and successful.
Hope that helps