The pressure wasn't only heavy. Its seemingly unstoppable power came from the deep meanings flowing inside it.
Noah and Alexander had an easier time understanding those meanings. They were extremely powerful specimens that stood at the peak of their respective fields, so they could recognize the similarities in that influence.
Heaven and Earth weren't trying to suppress Noah's group. They were merely expressing the entirety of their power, which carried the sea of worlds accumulated during their long lives.
That stable mass of meanings naturally gave birth to a superior existence, something that went beyond the limits of the species. Heaven and Earth were far past magical beasts, humans, and hybrids. They were a being that had long since abandoned those weak labels.
Noah didn't forget about his time as a human. He recalled his envy and interest in the magical beasts and the process that had eventually brought him to his current state.