Funny. We're all united by English, but every word has a slightly different flavor. If you say the word "bars" aloud, every person who hears you will form a completely different mental image. Same thing with "cyclist."
Anyone who rides a bicycle or motorcycle is a cyclist.
There is always a bigger fish in the sea, and there's always a bigger dude in the gym shower. I have 5 bikes in my living room, I've built my own wheels, I've woken up disoriented in the hospital, and can usually ride a century in less than 5 hours if it isn't too hilly, but there is always someone with more bikes, or who's faster.
Drawing the line is silly, because everyone draws it differently.