Cleric Stance was clunky, and it seems like the vast majority of the community is very accepting of the change. Moreover, this will help alleviate some of the anxiety associated with throwing out some DPS as a healer. The change might make XIV's healers feel a little bit less dynamic, but it also serve to streamline things.

If you want something more stance-dancey nowadays, it looks like BRD might be worth trying.

Honestly, if WHM is your main, I think there are other changes that are more frustrating than the removal of Cleric Stance ^^/