That’s good advice in general, a lot of critters there tend to be crepuscular if not outright nocturnal (though it might be a bit on the chilly side for many herps) - but in this specific case …
I pushed back pretty firmly against whipping up ‘stranger danger’ fears in another thread here - but in the case of Alice, it can be a very different place at night to what you see during the day. If you’re not in the company of long term locals (and sometimes even if you are), a lot of the things that might be effective elsewhere (staying in a group, not looking ostentatiously out of place, not obviously carrying valuables, not looking vulnerable, being able to connect with people and talk down conflict, being somewhere well lit with camera surveillance) might not be nearly as protective as you’d hope.
There’s a lot of deeply entrenched disadvantage there, and a long history of oppression, so there’s not a lot of grey left separating You as a visitor with good intentions from the Them that have instilled generationally enduring resentment - and a tension between the people who want to bring tourist dollars into the town and the people whose lived experience is that this only disadvantages them even further.
It really is an incredibly beautiful place to be out in at night, particularly away from city lights and if you’re out there with clear skies and a new moon - but it can also be pretty Mad Max anywhere that’s not well away from any people who aren’t Already Friends. Most of the people you’ll meet there really are fundamentally lovely - but things can, and more often than many places sometimes do, turn really quickly and with very little warning.
I could tell a bunch of Much Stranger Than Fiction absolutely true stories - but I’ll just say this is on the short list of places where I’d really emphasise the need to be constantly and especially careful and to get good advice from as many trusted locals as you can when planning where and when to go, over (my normally preferred method of) just following your nose toward whatever looks the most interesting at the time and figuring everything else out as you go.
It’s that brand of ‘potentially hostile’ which has places that can be dangerous, people that can be dangerous, weather that can be dangerous, roads and trails that can be dangerous, places that are taboo to everyone, places that are taboo to just men or women, places that can lure you into walking past a point of no return, ‘rules’ that nobody told you, and situations that can totally upend your normal expectations of what is or isn’t safe. There’s a whole lot to love, but it can be a really tough love…
So I’d personally be a little hesitant to recommend freely roaming the streets or surrounds of Alice at night, especially with flashy looking photographic equipment and NVGs … but if you can safely get well off the beaten track, there’s a good chance of seeing things that you won’t quickly forget.