In men's pro pool, eight ball goes back to 1900. Outside of the European championships, the women have tended not to compete at 8ball except in the amateur ranks. In its 50 year history, I don't recall even a single WPBA 8ball event.
For the women, 8ball is going to have a meaningful place in pool, but it doesn't yet. When measuring greatness in women's pool, I look at results in rotation pool, not the other disciplines.
What initially made Efren's IPT win meaningless was not getting paid.
That said, I agree that a WPA World Championship of any kind is an achievement, but at pro level, and this is true for the men, too, 8ball sits at the bottom of the pecking order, a fringe game rightly overlooked even at the greatest all-around pool competitions of all time, Johnston City and Derby City.
Guess you've made a good point. I agree.