Somewhat is Cabaka's defense, I think the blue/red stuff is measuring their "indicators" of moving averages blah blah, not the actual market prices.
Moving average "investing" is just another name for momentum "investing". We've had multiple momentum threads of various flavors on this forum, including at least
one that is still being actively followed as of yesterday. Just read through the Investor Alley subforum for a good laugh. Most of those strategies have been substantially more complicated than the simple version cabaka has promoted, focusing on rotating your investments between more than just stocks and cash based on recent performance, and we've even devoted a few tens of thousands of words to choosing the right look-back period and representative funds for "stocks" or "cash". So far, none of them have outperformed the index over the duration they've been tracked, though several have been abandoned as being obvious losers and at least one promoter has permanently left the forum in disgrace.
Given this history, the fact that anyone would have the balls to show up here and claim they can beat the market with a momentum strategy is king of amazing. That person is either woefully ignorant of the amount time and expertise that we've already devoted to this topic, or is just trolling for lulz.
I feel the same way when someone shows up and posts an "amazing new analysis" by someone like Kitces. Um, the people on this forum have collectively done a much more thorough job of exploring these options than he has. For some reason, people think a single individual like that has more authority than the collected wisdom of all the people here, because they found it on a pretty blog page and didn't bother to dig into the actual data.
I know that we sometimes come off as flippant and dismissive to newcomers with dumb ideas. There's a reason for that, though. The amount of expertise applied by this forum, both financial and technical and computational and theoretical, far outweighs anything any single person can offer you. That expertise is largely invisible to newcomers, though, so they tend to think we're a bunch of loony amateurs.