There's nothing wrong with "yuribaiting."
A woman being related to another is miles more interesting than being a single character. Gwynn/Canary and Lebanne/Jacinthe have more pictures in one month than women like Griselle, Mable, or Lida, because men, even the normalfags, like yuri.

Also, explicit "yuribaiting" ironically leads to more straight porn. Florian has more pictures with his female cast than Victor or Helio, who got ignored hard because people prefer to draw Marnie or Lillie scissoring the female character.