@Bacle Someone can be very influential to the general understanding of some topic, without most of the people involved having ever heard that someone's name or much about him.
Regarding the whole "spectrum" thing, what I think it boils down to is that Kinsey and his following thought that
literally everyone was really bisexual. Just that most people were more towards hetero then homo.
It sounds crazy, and almost like the stereotype of the perverted man who refuses to understand that the rest of humanity does not share his perversion.