Transformative Energy, although only a step away from the Innate Realm, is actually as distant as the end of the world. Some people spend their entire lives stuck on the threshold of major accomplishment in Transformative Energy, never to cross the threshold.
Without reaching the Innate Realm, one is ultimately no more than an ant.
The external release of Inner Strength is just one characteristic of the Innate Realm. After entering the Innate Realm, the Inner Strength within the body transforms into True Qi, and the quality gap between the two is more than tenfold, allowing one's combat power to surge by more than ten times, potentially extending one's lifespan by a dozen years, and enabling one to glimpse higher realms.