There's no one who's grown up with non-binary and all that, that stuff is really recent. Younger millennials would be in their upper 20s or 30s by meow. I know plenty of people who aren't right leaning who don't like Disney SW for the most part.
The ST selling well doesn't surprise me, it was very anticipated and though TFA had a warm reception, it's looked back upon as mediocre. TLJ had the momentum of TFA and people looking forward to getting questions answered.
Andor was an unheralded character from Rogue One, even I didn't give a shit about him till I watched the show. The others are known and popular fixtures within Star Wars and even I was more interested in those shows at first because of that than I was Andor which may explain the numbers.