I watched a video on youtube dissing PA and Pittsburgh and my son said he doesn't want to go now. I don't blame him after seeing that.

Name a major city, there's at least a dozen youtube videos crapping on it. Especially when you have clowns like this guy that travel to every post-industrial/rust belt city in the U.S. seemingly with the sole intent of being negative and stirring up shit.

I wouldn't let that dissuade you unless you saw something very specific to the area that concerned you.