They are a sexist if they intend so, I would think...that is, if they carry sexist intention. But in the world of any one person's perceptions, another person will be seen as "sexist" if that is what the first person decides to see them as...and not if not. If so, what could they do about it?

And which is the final truth of the matter? Who can say?

How would someone accused of sexism defend him or herself? Perhaps by not defending at all?

What would make anyone here think he or she had the final answer to such a question?

I only speculate. I do not have the final answer.

As Dylan said, "it's blowing in the wind". We can feel the wind, but we cannot catch it.