While the items noted in the article could cause disruption, pain, or confusion to the community for some time, none of them really seem to be a linchpin that will actually bring down Bitcoin.

Social, strategic, and unconventional attacks can and do work against a technical or online community, but they need to be modified to account for the countermeasures the community will put in place.

Lastly, while the author has interesting experience, that doesn't make it relevant to bitcoin. A former employer of mine once hired a former secret services person to run and manage a red team. He was great with physical security, but didn't understand the technical layer and so a lot of his efforts went no where.