I'm not claiming to be the majority here, but I first learned about Yoko Ono and her work from a Fluxus artists' catalogue and much later found out that she was married to someone famous.
It's unlikely that Yoko's work would have been in that artists' catalogue if she hadn't married John Lennon.
on the contrary, they met after John went to one of Yoko's art shows and was intrigued by her artwork; it's probably unlikely that Yoko would have married John if it were not for Yoko's work.
I remember seeing her work alongside of other artists, and before reading the plaque with the name, think, "meh, kind of underwhelming" and then seeing "oh, it's Yoko, that's why it's here".