I don't know that I agree with this completely. I am "a person who needs a strong enough emotional bond to want to have sex with someone" but I don't like the part of "demisexuality" that implies someone who needs emotional intimacy as part of sex, has to be asexual in some way, because I actually have a raging libido ALL THE TIME, it's just not directed at specific people unless I know and love them. The benefit of the word demisexual is that it can be a way to explain yourself in comparison to how the average person tends to see sex. I was genuinely surprised when I learned that the average person would, if they could, apparently have sex with a handsome stranger if given the opportunity and consent. That concept is just very foreign to me. I didn't lose my virginity until 23 because I didn't have the connection yet with someone. People thought I was a prude or hyper religious which wasn't true at all.
So the idea that "demisexuality" is a thing makes me feel sometimes like "oh I'm not weird, there are other people like me, and the people who would happily hookup with strangers aren't weird either, they're just allosexual". But the label is reductive and doesn't properly describe me, and I would rather people know me as myself.