The reason I state this:
Go to raidbots (or world of logs to do it yourself) and look at the top 100 HPS for fights, then look at the overall HPS for fights. For instance:
We've been in steady decline and yet the other classes that are on top (priest, druid, monk) are getting buffs, while the last 2 classes basically remain unchanged, or in our case NERFED.
I don't understand what their intent is, but it will definitely make me re-roll to a healing class that my raid will need. A holy paly is easily replaceable. Oh no, wait - my DEVO aura - Just kidding guys, bring a ret, does the same thing.