Maybe he was trying to out-Loss himself and end the series with something even more stupid so people would remember it? I mean, in all honesty, the robopocalypse ending is way fucking stupider than Loss ever was.
But then again, no one really remembers how CAD "ended". So even if that's what he was going for (which I doubt, since Bum Tickley is a hack fraud) he failed miserably there too. You also didn't have as many edits. (Though Strangle was pretty great while it lasted)
Shit, does Tim even make money off of this comic anymore? Are 13 year olds still eating this shit up? He has to be doing it just to spite people like us, right?