The person is so far right they don’t see their views as political
The person is filled with apathy and has enough privilege not to care about anything or anyone
The person is the most uninformed unmotivated milquetoast liberal who doesn’t really care about anyone else but vaguely supports values like “being nice” and “respectability politics”
There are three options really
Or they recognise that identifying themselves as right wing could have a negative effect on their dating prospects, so try to disguise that fact.
Unless you mean reasons they might genuinely consider themselves non political, in which I agree with you.
the last one also applies to conservatives, they also can be super uniformed, most of them are.