I believe that's a pretty good example of the "so" rule... I am absolutely not saying that we should do away with all statues, but what *is* true is that there's no cause for being precious about protecting them. The choice of whom to commemorate with a statue is inherently political in the first place, so it's a fallacy to act as if only those clamouring for the removal are politically motivated.
Cromwell is a pretty good example, as a matter of fact, of someone who is very clearly a massively divisive figure. I can certainly understand the logic of having a statue of him outside Parliament, but, by contrast, try defending the idea of putting one of him up outside the NI Assembly.