I suspect the NZ bloke was racist and immediately linked all Southern Americans with racism, so felt comfortable opening up.

Ngl as a non-american if I met a dude in a bar and he's was from 'the south' especially Texas or Florida I would be sitting there expecting some kind of anti-'woke', anti-minority, anti-women, anti-brown comment eventually. At least until I had sussed him out for a bit

Can confirm. I'm a 6'4 big bearded mountain looking fucker in the Bible belt, and people REGULARLY think "he agrees with me about this painfully mundane thing so surely he agrees with me that trans people need to shut up and dress appropriately (or whatever)" They'll often be saying the quiet part to me out loud within 5 minutes of shooting the bull with a total stranger.