It's ok, I don't hate anyone for shipping.
What I have against ships is that most of them are gay (also known as yaoi/yuri) ships. I don't support that in real life, so I don't support it in the fan base either.
That's how most people I know would react xD
I've never had a "nosebleed", nor do I find any guys sexy/hot/cute/etc., but if I was normal person that's probably how I would react too XD