This video misses the obvious. They need locking dumpsters that are bear proof. Otherwise their problem will never go away. I was just in Anacortes, WA visiting my auntie from Alaska. She told me the story of the bears near Homer that figured out how to use one claw to "unzip" the weather stripping around the windshields of cars to gain access to the contents.
Back in the 70s I was working in Yosemite Valley on a contract with the NPS. Every morning outside Curry Cabins, there was a bear in the dumpster having breakfast. I walked past him and he knew my voice after a couple of days and didn't even look up. Now the dumpsters have locks and those kinds of bears are no longer there.