I thought the objection was that the Catalyst doesn't actually solve anything for Shepard; it just complicates an existing solution. Although, technically, I suppose the Catalyst does solve the suddenly-introduced problem of the Crucible having no "on" switch.
I know the discussion only from the point where the crucible does not do anything and Shepard faints. While the whole concept of the crucible is somewhat laughable - we built it, but don't know what it does, or rather, no one bothers to tell Shepard because Shepard's a moron
- given that premise it is not a big surprise that people don't know how to start the thing after it has docked
. That is, statement A is b***t, statement B is b***t, but the implication how one gets from A to B actually makes sense
.
Of course Shepard could have regained conciousness, "nice nap, now get going!", and randomly pushed buttons until the crucible...does stuff, in which case the catalyst would indeed just have complicated things
but that possibility was off my plausibility radar when I first saw that scene...
I just see the Reapers as highly intelligent, sentient beings, but with blinker vision narrow-mindedness
"Must kill squishy things!" But why? "We just must!"
Of course we have so little information that we can make up almost anything about the reapers. That they are just VIs, bound to their programming without free will. That the starchild is a trick played by Harbinger. That the starchild controls all reapers and they only wrongly believe that they have a free will (like Souvereign). That the starchild is a manifestation of the free willed hive conciousness of the reapers. And so on and so on...
I mostly like your interpretation: They are sentient, highly intelligent, but bound to a misguided hypothesis about life by their core programming that they themselves cannot change (makes them almost human
).
But, to describe this whole situation with the catalyst, I'd like to cite what Dave Van Ronk said about Bob Dylan's song "All Along the Watchtower":
That whole artistic mystique is one of the great traps of this business, because down that road lies unintelligibility. Dylan has a lot to answer for there, because after a while he discovered that he could get away with anything—he was Bob Dylan and people would take whatever he wrote on faith. So he could do something like "All Along the Watchtower," which is simply a mistake from the title on down: a watchtower is not a road or a wall, and you can't go along it.
That's almost applicable 1:1 to the catalyst. Or the whole ending.