The standard seems to be that if a theory can be misunderstood by anyone to address things it does not, it is allowable to consider that the fault of the author, and perceived faults of the author can be held to be admissible as faults of the theory. I can't blame Darwin for Julian Huxley or Ernst Haeckel....
BTW, I think a theory ought to be judged by how well it addresses its subject matter. Who's yelling the loudest, whether pro or con, is irrelevant. Or ought to be.