I definitely agree that bisexual people are more open minded. I have a student who is gay and he does not even believe in bisexuality, not to mention not even knowing the word pansexual (which made him roll his eyes).
But back to the question...I am hetero but not poly. So hypothetically
if I was single, I would be less likely to date a bisexual woman. Naturally, I would seek out a mono partner so this wouldn't be an issue though. If she was wired mono, she wouldn't be interested in others and I'm not into the two women one guy thing anyways.
I don't think I qualify for this question