She said her mom would say it, the full quote is:
My mother used to—she would give us a hard time sometimes, and she would say to us, "I don't know what's wrong with you young people. You think you just fell out of a coconut tree?" (Laughs.) You exist in the context of all in which you live and what came before you.
I love that this is on the official White House record: Remarks by Vice President Harris at Swearing-In Ceremony of Commissioners for the White House Initiative on Advancing Educational Equity, Excellence, and Economic Opportunity for Hispanics
This post isn't even saying she is trans or that there was any connection to anything irl, just a way to point out how simple it should be to give someone respect. It's also not a political agenda being supported, it's basic decency.
And why tf does it matter which Trek was someone's first? I wasn't born in the 50s so I didn't start with the original series. It's been going on for decades, people can start wherever.