Statues of historical figures are not history but are rather a symbol of it. They are not mediums through which we learn about and understand history, but they are mere symbols of adoration which suggest that the figure in question did great things.
That said, the statues do not teach us about the content of historical events exactly but rather that the figure depicted in the work was revered and respected at some point in time. So, the removal of controversial statues would neither limit our understanding of nor falsify British history because the statues do not represent or affect the acts the historical figures carried out, but the importance and respect placed on such acts and the admiration for the figure.
The removal of statues can enhance our understanding of history and forms part of history itself.
Erasure of the symbols contributes to the legacy of the events, such as transatlantic slavery, that are exalted through the statues of historical figures and reflects current attitudes towards such events and societal issues such as systemic racism.