I haven’t seen the evidence of ‘water oceans’ out there that are about more than a few water ‘geysers’ spewing from below the frozen surfaces like our breaths on winter mornings.
Whenever I hear the words ‘water’ or ‘life’ in a message from NASA I think, ‘Hmmm… who stands to gain from this PR?’ (At least telescopes return great pix and -other, visible- evidence.)