I can. Because it reinforces the idea that 'bisexual' is a synonym for 'unsure' when it isn't. That mindset isn't going to change if we stay quiet about that and grant people leeway out of sympathy. The same could be said of bisexuals with a strong same sex preference, yet I don't see the LGs here (save for one or two) giving those bisexuals a pass. They shouldn't. And it goes both ways.

Edit: I don't mean 'blame' in a 'you're a piece of shit if you do this' sort of way. I mean I'm in favor of holding people accountable when they do this, pointing it out where appropriate, and acknowledging the implications it has on all of us. We can do that while also acknowledging that there is fear and confusion behind this behavior for many people, while still saying it isn't okay.