I've heard it used that way in the UK too, but the first meaning is traditional. Wiktionary has some examples: https://en.wiktionary.org/wiki/moot https://en.w

I've heard it used that way in the UK too, but the first meaning is traditional. Wiktionary has some examples: https://en.wiktionary.org/wiki/moot https://en.wiktionary.org/wiki/moot I expect the US meaning will eventually become standard everywhere.