Earlier quoted context omitted.
Yes, of course, if you register as an overseas voter. You get to keep voting in the last place you lived. I couldn’t transfer my vote to Texas where it would do more good, for instance. https://sfelections.sfgov.org/military-and-overseas-voting When my daughter turns 18 and if we haven’t returned to the US by then, she’ll also get to vote in her hometown of San Francisco.
I know a us citizen can always vote in a federal election. But generally you can't vote in a local election, unless you live there. I can't tell from the link you posted... But apparently California doesn't care. And some wonder why people question election results.
What part of that is unclear?