I'm gonna back away from this, because you seem to be getting testy and I'm not overly interested in having it escalate
Considering neither Hermann's nor Butera's 2012 season was strong at the MLB level why didn't the Twins sign "competition" for them? Why was Parmalee's poor hitting deemed for banishment but not Butera's? To respond "he needed AAA experience" isn't any more relevant to Parmalee than for Butera. To me, the real answer is derived from "Why was anybody signed to compete with Butera (and Hermann) to be a bench catcher for the Twins?" Those guys are plentiful, cheap, and can easily be dismissed without issue. The answer is easy.
I think your post gets at a lot of things that are different than what I was wondering about in this topic, though. My angle was to take the original post's thought that Gardy wanted more pop, presuming that a good place to do that would be to replace Butera, and then to try and see how likely this was based on what was different at the start of last year (when he wasn't on the 25-man) and the remainder (when he was).
Your facts that Butera played more than "emergency" levels is undisputed, but my point was to figure out WHY. I maintain it's because Morneau moved from DH where he started the year to 1B when he returned from injury. This left Mauer and Doumit DH'ing frequently (almost always one or the other), and I believe THAT is the reason Butera was kept and played (I have made no conclusion about whether this is right or wrong, simply that it was "the reason").
My guess as to why Parmelee was demoted when he hit poorly and Butera was not: Parmelee had been the STARTING 1B. His replacement became Justin Morneau. Butera was the third-most-frequently used catcher. His replacement was...Hermann?
My guess as to why nobody from outside the organization was brought in to possibly be that third catcher instead of the aforementioned group: (This space intentionally left blank)
Your first post in this thread, in its entirety, said Butera came up when Morneau went out for a couple of weeks. There was no additional commentary as to why or anything about the Morneau-Mauer-Doumit-Butera chain. From there I wanted to get at what was different, especially when Morneau came back. Since Butera stayed, it didn't seem as simple as Morneau Out = Butera In.
In response to my attempt to look at what changed, you replied that Gardenhire wanted Butera all along and used Morneau going out as his excuse. I still don't see how that makes sense, and don't see where you made the arguments that you seem to wonder how I missed. Was it in a different thread? I don't see it here. I apologize if I'm missing it somehow.
All of that is outside the topic of the thread, though, and I'll re-state the essence of where I was going to hopefully get us out of the mire here: Butera was kept on the roster after Morneau came back because the DH was almost always Doumit or Mauer. Before Morneau went out, it wasn't necessary because Morneau was the DH (and, therefore, Doumit was not). So if the hope is that there is "more pop off the bench" in place of a third catcher, it seems unlikely to me unless A) someone other than Doumit is the primary DH, or B) the popper can also fill in at catcher.