I speak Portuguese. I don't need a translator. In the video he stated most people at the train station are tourists and very few are Koreans going to China to work.
He also mentioned not being allowed to take photos of anything/anyone involved in the military and being that they're everywhere, most places couldn't be photographed.
I'm also Brazilian. I visited a military base in Brazil and took multiple photos and videos without having to hide it. Korea is not a free country.
This video also fails to show the parts of North Korea that hasn't been specifically polished for tourists to see. If you want the true Korean experience, don't take it from a polished North Korean tour experience. Take it from a North Korean refugee. There's many videos, interviews, and books for you to read. Your English seems good enough.
Just remember that during the 2016 election, the "If not Bernie, then Trump" bros turned out to be Russian interference.
I wouldn't be surprised if it's just Russia trying to split the Dem base.