The problem with this romantic framing is that it assumes a developmental arc that almost never happens.
These traditions are not training wheels. Training wheels are designed to be removed. But religious promises are designed to be internalized, defended, and transmitted. In practice, the "collapse of myth" is the exception, not the success case.
Indoctrination doesn't prime the mind for truth - it primes it against independent meaning-making. Once a psyche is conditioned to associate comfort, morality, hope, and existential safety with divine rewards, it doesn't graduate into clarity later. it becomes dependent. The miracles and myths don't gently fall away - they get rationalized, spiritualized, and protected at all costs.
If these were indeed "training wheels", religions would celebrate their dissolution. Instead, doubt is punished, apostasy is feared, and reinterpretation is tightly policed.
What's sold as "milk for babies" often becomes a lifelong diet, because the system actively discourages the very maturity it claims to prepare you for. The believer isn't trained to face reality without consolation. Instead, they're trained to distrust any meaning that doesn't arrive with divine approval and to accept cosmic bribery as virtue.
So when someone does outgrow these myths, it's not thanks to the traditions - it's despite it.