Certainly not each of them.
I think the so-called legends are certainly Celebrities, women like Christy Canyon, or guys like Peter North. Actors and actresses of that league. They may come from the more sleazy rows of stardom, but they are celebrities, since their names are rather spread, and associated with the business. However, most actresses/actors are no celebrities; they lack the fame of one, and lack the recognition factor of a true celebrity.