If readers are ok cherry picking from his work, and go on, they should also argue his points that there be a stealthy Russian amphibious landing on US soil, and Russian agents flooding US with "psychotronic agent" to steer US elections...

The guy just puts a shopping list of all obvious nasty things that could happen to the West, and call it a strategy. Few things from that coming true, does not mean them acting on this as a guiding policy.

Continuing the parallel with Danish: yes, Vikings main interest with British Islands was loot and plunder, but they were not dumb to the level where they make invading the British harder for themselves. When given a chance, they would thoroughly mess up British political arrangements with all means available to them.