My (extremely limited) understanding is that enough people are looking at MA's, (especially crosses), so that they become a part of the group psychology that is responsible for contributing to price action.
GG is on trading view under "luckylegs10" if anyone is interested. He makes some very nice charts that normally come to fruition. Especially in the long view (months, year). With the dollar, I haven't seen him make a bad call in the last year or so. Current outlook:
Mt Short lost some altitude, ironically with Everest losing the Hillary Step... no not her, it was a guys last name.
A run is underway, but quarterly contracts end next month, before summer vacation of the rich.
As always this run will be tampered, tempered, & trampled unless all else preemptively falls.