Which is fine for fiction stories generally, they're just fiction after all, but hard SF likes to pretend it's somehow purer or more rational than other kinds of stories.
> This is most especially true for the "soft" sciences that the hard SF engineering types so often sneer at.
Sneering is always inappropriate, whether it is being done by hard scifi fans looking down at soft sciences or by literary types who don't see the point of ever engaging with realism. These feed each other, of course.
To the hard scifi fan, the entire point of tangling with realism -- which is guaranteed to be difficult, involve sacrifices, and have limited scope -- is because it helps us understand humanity. Specifically, in the context of hypothetical technology. It's always frustrating when literary types stomp in and act like they have a monopoly on this type of thing, when really we ought to be on the same team. Ah well.
This might be a controversial view, but I would argue all storytelling is ultimately an exercise in examining yourself and the context you live in.
Whether the author is aware that that is what they are doing is another matter...
On the movie side, interstellar spends a lot of time on making things scientifically accurate, but also examines humanity much more than most sf movies.
So i don't think they're at odds.