Why wouldn't it be? We train these models on our own words, ideas, and thought patterns and expect them to reason and communicate as we do, anthropomorphizing is natural when we expect them to interact like a human does.

The general consensus seems to be that we can expect them to reach a level of intelligence that matches us at some point in the future, and we'll probably reach that point before we can agree we're there. Defaulting to kindness and respect even before we think its necessary is a good thing.