I'm not sure what much of that had to do with Deadrock other than I think you've all guessed the eventual crossover we've had planned for months now.
First and foremost, Tingles is a Godhead. Not a/the God, a Godhead. His powers extend to probability and chaos, that's it. He can't control anything directly, either, he can only influence, just like the other Godhead's.
Now, the Tingles featured briefly in the flashback is a very young Tingles. He was letting the power go to his head and be an all around richardweed, he, like all characters worth reading about, has actually evolved. Now, as for him not being damaged in battle, I don't really know much about that. I haven't written for Tingles up until this point, and so I may write him a bit differently than Menen does.
Personally I could care less about whatever it is we're all arguing over, because I'm enjoying my story and Menen's doing his thing.
Sure, there may crop up a few plot holes here and there, and we'll do our best to fill them, but you can't catch them all. I might also remind you that, Citizen Kane, largely considered the greatest cinematic piece of all time, literally opens on a plot hole that's never explained in the rest of the film.
If our plotholes are actually so glaring that they're leaving you uninterested in the story itself, then by all means either attempt to call them out in criticisms or simply stop reading all together. But if the plotholes are nothing more than nitpicks of a fictional element we created (i.e. Godheads), then you can just stop. We're writing them and we have them pretty much figured out in our heads, we just haven't explained everything yet because it's a major spoiler otherwise. Yes, Tingles is that important, no I don't think Menen or myself will be telling you.
Now, I'm not sure why there's so much hate on Menen, but from what I can tell, no one has really said anything to the effect of "Deadrock sucks lol" to me like they have with him, so I'm going to assume this is more directed at him rather than at the story itself.