there are multiple hashkafas on many issues which are equally acceptable to Jewish belief
So you accept the hashkafa of those rabbis who hold by a 5771 year old geocentric universe as being 'equally acceptable'. Also, very good!
No, not equally acceptable
to me because their view is incorrect and proven incorrect by scientific fact. So yes, indeed, they are wrong in their view (and shortsighted IMO), but that doesn't make them
heretics! That has a real halachic definition. It does not mean "anyone I don't like."
So it is "acceptable" in the sense that no one is a min or a heretic for believing it or asserting it, even if they are incorrect in my personal opinion. It can still be considered kosher Jewish belief even if I think it's certainly the wrong hashkafa for one to adopt.
Similarly, I think that adopting a view which views working and jobs as forbidden/only for dropouts/without value is completely mistaken and foolhardy. Yet many haredim in Israel adopt this view, and its embedded in the education system. These people are not heretics for adopting that view which I think is wrong and harmful to the soul of the Jewish people, personally. (Then again, it's not the perfect parallel because these people have
other problems - there are halachoth against taking a living from learning Torah and clear advices from chazal that being without work will lead to sin. But I'm just speaking in general in terms of an outlook that work is second-class or not befitting a 'talmid chacham.')
the Torah is not a science textbook
Correct. But on those subject on which the Torah touches science,
And according to the view I subscribe to, Bereshith account is NOT one of those subjects that Torah touches on science. So there is no problem even according to your formulation.
However, you should know that that view of yours is simply false. I've mentioned already in this thread, but the gemara speaks about gentile scholars and Jewish scholars and sides with the gentile scholars' opinion about the sun's path around the earth. Where do you think the Jewish scholars got their view from if not from Torah? Likewise, Baalei Tosafoth assert that we do not go by the medical advice of the gemara which is not applicable in our day. Whatever "science" we get from Torah (if any) is not just any old thing wonga can glean from the written text... It's the
science that chazal themselves read into the text or extracted from the text . And in that sense, we are not bound to accept that science of chazal in all cases as per the gemara I refer to (forget where it is but can look it up and cite if you request).