Being forgotten and having an impact aren't the same thing. Regardless, Jenner's life has meaning and wasn't pointless. Point made. Michaelangelo (the artist, not the turtle)? Plato? Rosa Parks? How about Ryan White? Most today have no idea who he was but he changed the world in a big way and the impact is still felt even if he's forgotten.
Their lives had worldly meaning but not ultimate meaning if they're just dust now.
IMHO.