I am happy to have a non-xenophobic reason for understanding it’s usage, but I disagree that it would be possible to not be xenophobic. If you ask people, most of them will say they aren’t, because they don’t want to be, but in reality I think most of them are. If a black person is trying to break a lock, people will call the police, and if a white person is trying to break one they will be offered help. The most important thing is to be aware of it and minimize acting to it, not just by compensating for the xenophobia, but by making it impossible to act xenophobic in the first place (like with blind job application processes).
Saying it natural rather sounds as excuses for xenophobic people.
It’s important that you bring this up and I hope that suggesting that xenophobia is natural to humans won’t be perceived as an excuse for acting xenophobic to anyone.
On the spectrum is technically correct as long as it can be implied from an earlier specification that it is about the meant spectrum. And even if it is technically correct, having a good reason for continuing with simply the spectrum would… make sense. If people would realize that they try to leave out the terms autism and autistic for a wrong reason (and maybe they don’t) that would be a success. It’s not about choosing whether something is offensive to me or not, but whether it is, be it intended or not. I am aware that people don’t usually use it to purposefully be offensive, and in that sense I can understand it - but that doesn’t change that (depending on the unconscious reason) it is offensive anyway.