Neither gives them standing to scientifically declare Holy Scripture a myth.
“My teacher treated Creation as allegory, not history.”
Yet we know that science has confirmed some of what is written in Holy Scripture. And your teacher cannot scientifically declare Creation neither as allegory nor history. Scientifically, it is subject to further discovery.
“Others treat it as history, and we call them creationists.”
Which kind? To which of the twenty or more categories of Creationism, besides the generic term itself, do you refer? And, which do you find offensive? Why do you choose not to focus your disapproval on that category, and instead choose to vilify a whole religious tradition?
Young Earth Creationism, Old Earth Creationism, Day-Age Creationism, Gap Creationism, ‘Evolution’ Creationism (whatever that is), Intelligent Design, Modern geocentrism Creationists, Omphalos hypothesis Creationists, Creation science Creationists, Gap Creationists, Progressive Creationists, Neo Creationists, Creation literalists, Evolution Theist Creationists, Micro-Evolutionary Creationism, Progressive Creationists, Flat Earther Creationists, “hard core” Creationists? Are all to be held in contempt?
I know of no Christian who does not hold as a fundamental tenet of belief that God is the creator of the Universe. Do you?
“no opinion or belief is sent to man from God contrary to natural knowledge.” (T. Aquinas, Of God and His Creatures, Book I, Chap. 7)
Then nobody has standing to declare it fact either.
Yet we know that science has confirmed some of what is written in Holy Scripture.
We see vague parallels that can be interpreted as such. But then we see that in many religions. In fact, drawing these parallels and getting you to see the connection is a tactic of cold-reader hucksters. The point is that if you want to see them, you will.
Which kind?
Take what I described and you apply the appropriate ones from your list. The point is that they exist.
I know of no Christian who does not hold as a fundamental tenet of belief that God is the creator of the Universe.
Back to the beginning, that's what my professor thought. He just didn't believe the literal creation.
“no opinion or belief is sent to man from God contrary to natural knowledge.”
"Science has proof without any certainty. Creationists have certainty without any proof." Ashley Montagu