I disagree, I believe Ralts was correct. It was the impression I also received from the post, that the other healer was making a case of out-classing their co-healer. I think at this point it is valid to say Cleric Stance was designed as an ability to use in Questing/Fates/Solo content and that the Developers didn't intend for healers to be using it in a Dungeon situation. Players gave it that utility, because by nature we take the most efficient route where possible. If you need to go from point A to point C, and you can avoid point B, why wouldn't you? You save time and resources. This is especially true for dungeons and the likes where, the sooner you've completed a dungeon, the sooner you can queue for another, or move on to a different activity in the game.
What we have now is a divide amongst healers and would-be healers that focuses largely around DPS'ing in groups. Its not a particularly healthy divide, and I think the post Ralts was replying to highlighted that. Its one thing to say you're an inefficient -player- for not making use of every available resource, and another to say you're an inefficient -healer- because you only heal and avoid using Cleric Stance in group content.