My note, the problem here is the same as carbon on asteroids and abiogenesis converting that into life on Earth. Example, How much asteroid material is NASA's OSIRIS-REx probe delivering to Earth this weekend?,
https://forums.space.com/threads/ho...probe-delivering-to-earth-this-weekend.63198/
Yeah.
But, the headline is certainly news-worthy because it is a first. But, your questions, and hundreds more that are related, will also require a number of firsts to get us to a point where there is a hint of life probability on any of the watery moons.
BTW, had I not left my revised program at the office, I would be able to tell you the total number of exoplanets that meet the simple conditions for a watery moon. Namely:
1) large enough to generate tidal stress heating to keep water liquid under an ice caprice;
2) located past their respective Frost line.
I think the number was close to 500, but it could have been as much as 800. I don't know how many exoplanets did not have the necessary data to allow the test, though most of them did.