Well Double Chen and Off the Great Wall are Falun Gong cultists so they like to talk smack about how the ~evil~ Chinese gov destroyed China or something like that. Their videos on Chinese history are wrong, like one time they showed a Ten Kingdoms portrait and said it was a Tang dynasty portrait. So basically they often don't know what they're talking about. They said "Asians" don't measure the rice or water when cooking rice but I do using the side of the rice cooker bowl thing. So yes they talk a lot of crap for the clicks and views and their channels are owned by the Epoch Times and NTDtv which is like a cult run media corporation.

But yes I think etiquette police who are actually security people with police training should be employed to sort out any annoyingly unruly people