I wonder if “Without water, the lunar surface instead gets deformed, stretching from a spherical shape into a more oblong one and back again.” Is enough energ

I wonder if “Without water, the lunar surface instead gets deformed, stretching from a spherical shape into a more oblong one and back again.” Is enough energy to keep the core of the moon hot? Like maybe the moons mass alone for for 4+ billion years would have cooled but the additional force of the earth stretching the moon like a rubber band creates heat energy...