I get your point, but you're making my head spin here from the sea-sickness involved in being asked to acknowledge that all viewpoints are equally valid.
People care about human-like intelligence. That's the point. We also care about trading and physics. But when we talk about the specific question of human-like intelligence (and not other kinds of intelligence), the human reality is the appropriate substrate. Acknowledging, of course, that for non-human intelligence there might be other substrates and also acknowledging that non-human intelligence can be valuable to people.
But let me take your argument to the extreme.
In classical machine learning theory, there's a proof of the value of bias. Bias plays a crucial role in guiding the learning process. If all hypotheses are considered equally possible, learning becomes infeasible due to the lack of any preference or constraint on the hypothesis space. Bias, in this context, refers to the inherent assumptions a learning algorithm makes about the data's underlying structure. Introducing some bias into the model allows it to favor certain types of solutions, thus narrowing down the hypothesis space and making learning feasible.
The logical extreme of your argument---if I understand it correctly---is that all machine learners are equally valuable. For example, an AI that learns a domain that is completely removed from all human values and thus we would be completely agnostic to and ignorant of, ipso facto, because it does not pertain or relate to us at all. In which case, who cares? By "who", I mean people. No one. By construction.
[edit: I'll give an example here. Let's say I randomly pick a corpus of images that are pure noise. I induce an algorithm to model that noise. That model will learn something valid but in a domain completely divorced from anything with human impact.]
So if we can acknowledge that some forms of learning are more important, merely by virtue of the fact that humans have preference, then perhaps we can perhaps wend our way back to agreeing that human-like intelligence is one valuable kind of intelligence, in addition to other valuable forms of intelligence like trading or board games.
We can play the game all day of "everything is subjective" and "up is down and black is white", but at the end of the day, for human beings, it's night.