Sadly, I also feel the same. It would have been so much better for him to be a man about it and admit defeat. But instead of facing the facts, he seems to be moving the goalposts on every failure. OK, he may now be selling fewer PlanB hats, but that's his own problem. Bitcoin is fully alive and kicking last time I checked.
For me, the best "model" is the White Paper itself. Halving = supply reduction by half / 4-year period. That's enough for me to know for a fact that "it's going up forever, Laura!" That's a qualitative assessment that's good enough for me. As for quantitative, short-term, Crystal BallTM predictive models, I'll leave those to the resident magicians, purely for amusement purposes, with the occasional collateral damage (read: mindrust events caused by masterluc).
No plan is flawless. We haven't developed psychohistory yet. When the model breaks, adjust it.
Yes, but his Twitter posts show arrogance and inability to accept his model now requires changes that invalidate its previous parameters and predictions. In that sense, one could take any equation, adjust it to fit any short-term trend and call it a model of everything.