In my financial experience, a lot of investment strategies that claim to work in the future because they were “back tested” for 20, 30, 40 or however many years still can fail.
It’s very difficult to accurately simulate all the factors that go into something as complex as an election or the performance of an investment.
I’m not saying they’re completely wrong, just that I’ve seen this claim many times and it didn’t prove out over the future events.
Tis a mere bagatelle. Fun, but nothing to bet the house on.