I think the biggest thing that encompasses everything that's been touched upon already is the fact that humor is SO incredibly objective, individual to everyone who consumes it, that something that is considered the 'funniest thing in the world' by tens of thousands of people will fall completely flat on hundreds of others.
It does not mean that these things are 'not funny.' Because, to someone, somewhere, it is.
It also does not mean the person providing the entertainment lacks skill. They might, but if someone appreciates what they offer enough for them to continue to make videos, blogs, etc. OR for the corporate monkeys to keep them on the air, then just... let it be. Don't watch it and take time to enjoy what you actually do find fun.