Maybe, or maybe not. My personal opinion is that even thirty years ago it seemed stupid to bet almost all resources on a theory that was too complex for anyone to even produce any testable predictions. And I think it is even more stupid now, when the main result of the theory seems to be that it's not possible to use it for any prediction (10^500 possible universes, it's not possible to say which one).
There has to be a couple of orders of magnitude difference between "funders thought it was the best bet for quantum gravity," and "it was all physicists did for thirty years, full stop."
I, nor anyone else I saw (I haven't read all comments), have claimed that that was what physics did for thirty years. If you read my comments you'll see that I have been quite careful to qualify my statements when it hasn't been blaringly obvious from context.
