Mormon women used to give blessings similar to–but not necessarily the same as–the ones currently restricted to male priesthood holders. This is a historical fact. I know of no revelation declaring such practices as being contrary to God’s will, but we’re at a point when many members of the Church feel that even bringing this up is somehow dangerous, irreverent, disrespectful, or otherwise suspect. There’s an “Ordain Women” movement going on which provokes some intense reactions (whether passive-aggressive or just plain aggressive.) There are other movements–like WAVE–which seek more incremental goals like finding better ways to include women in the Church without even requiring Priesthood ordination. (Neylan McBain’s 2012 FAIR Conference address is a must-read in this regard, and I think it could usefully be offered to bishops for their consideration.)
So we have a variety of ways that tension about this issue manifests itself. I was discussing things with a friend when someone called into question the motives of women who feel a desire to exercise priesthood power.