He asks: “Is the hydrino source of energy important for our survival and Gaia’s benefit once the interlopers withdraw?” What can Creator tell us?

In truth, there is plenty of energy available from conventional sources for the needs of humans in the short time they will continue to exist in the physical. You are on a very short timeline here, likely no more than two generations, about 40 years. You will either have all left through Ascension or, if still here by then, will be annihilated by the return of the Extraterrestrial Alliance after their hiatus.