The tone of this article strongly implies the technique will only work for foundational facts, unless you gamify it into the goal of the exercise in the first place: The investment of time to learn a random 52 card deck order only pays back if you can monetize the order of that specific deck.
Learning complex chromatic chord sequences, plays back literally as you make music. Memorising the score, or the script of a play, pays back in the (repeated) performance.
I think memory palaces are wonderful, but if you want to hold onto some ephemeral knowledge in a corner of your discipline and only refer to it twice in 20 years, the cost:benefit might not pay out.
