I do agree that The Delta Phenomenon "concept", regardless of which variation is used, is closely tied to Outcome Bias... weighting the outcome rather than the decision that led to the action that created that outcome. EW, imo, is similar in this regard.
That said, astrology, and therefore the moon do have a place, imo, if one cares to look.
For one, astrological events are immutable. Therefore, they are and can be used for "anchoring" TIME. Time, of course, relates well with cycles. If you have no place for "time" in YOUR trading, time anchoring would have no value: that's YOUR belief, it's ok.
For another, there is evidence the "lunar effect" DOES affect human (and animal) life. Since we all know "the market" operates on two basic human characteristics, fear and greed, understanding human triggers CAN be useful... Here's a recent BBC lunar effect easy-read article, no mention of finance however....
http://www.bbc.com/future/story/20190731-is-the-moon-impacting-your-mood-and-wellbeing.
The OP clearly stated his "calls" are not a trading system with priced entries or exits. If YOU have "no interest" or a pre-determined closed mind regarding astrology... Good trading to you, move on!