The Kasatha only brought the first tradition of solarian training to the Pact Worlds aboard the Idari and SF1e solarians were interpreted through that lens. We already had solarians moving outside that framework in SF1e with the Broken Cycle, Stellar Mystic, and Electrical Attunement options.
Philosophies have dichotomies, but they remain philosophies, so do the solarians, they are different but they remain philosophers.
Personal revelation is listed as being on equal importance with temple training. There are a lot of stories of particularly spiritual people demonstrating remarkable enlightenment improbably early in their development. Dae is clearly meant as something of a solarian wunderkind.
A toddler's revelation is in the space of "wow, is this my foot?"
Solarians are moving away from the portrayal as being dogmatically tied to one philosophical tradition in order to open up the wider and wilder universe.
Philosophies don't have dogma and are open to interpretation.
In starfinder the source of someone's supernatural powers are very loosely described and is open to the players imagination and that's fine. However every source needs and has an identity. So does the solarian power, don't strip the philosophical background from this tradition, it will only make it worse. And also give it a name while you are at it. Cynics' philosophy is Cynicism, Solarians' philosophy is Solarianism?
You want a savant solarian? Excellent! but ask this: Was Bach born a composer?