How do you think Andy would react if Steven and the Gems told him how they saved the Earth and the number of times Steven has nearly died?"
If this scene in Gem Harvest were any indicator, he wouldn’t take it too well, I think.
At the start of Gem Harvest, Andy viewed Steven as totally human. Even after seeing him pull out the shield, he was only considering how being a gem manifested in Steven. He’s fine seeing the gems do dangerous things because he still sees a clear divide between human beings and gems, and he sees Steven firmly on the human side. Like, Human with Gem Abilities, not human-gem hybrid.
And also, it’s clear to the cast of characters that all gems are adults. They never talk to the gems as if they’re children, which is why Andy was quick to ask which of the gems was Greg’s wife. No one was ruled out as a suspect.
On the other hand, Andy sees Steven as a child. And it’s not that children aren’t capable, but children can be easily pressured to copy or do things that might hurt them without fully knowing the risks yet.
It’s also a good play on the trope of “cool uncle lets you do crazy stuff.” I’d say Andy would give Steven and Greg and earful. Then Greg would explain the magical destiny. And Andy will have none of it. Only after they quiet down and Greg and Andy are alone will Greg explain how he felt when he realised the danger Steven was in too. Then he’d probably bring up the events of Ocean Gem and House Guest.
Because Steven will always be Greg’s son. And Greg knows that even if he can’t always understand why Steven does the things he does, he can try to be there for him and support him and try to minimise the risks as much as possible. Greg steps in when he feels the risks towards Steven are non-mitigable, like in Space Race. But overall, he is trying to gauge Steven’s abilities in a field he can never be part of.
That’s something I feel Andy can relate to.