So I was đọc this bài viết and I wondered if bạn guys agree with it...

I think it just depends on the individual. I rarely get bướm at all, about guys hoặc any other situation. Some people get them a lot. I think its thêm nerves than fear. You're nervous about saying something silly hoặc not making a good impression. I guess bạn could substitute nerves with fear, but I prefer the former.
I don't think feeling bướm hoặc not has anything to do with if the guy is right for you.