I think you may have a point. It actually reminded me a little bit of the Islamic hostility towards graven images, though I suppose the theory behind that is a bit different.
I saw something a little bit similar earlier, though from a secular perspective... the idea that because all historical figures have their problematic side, we should reconsider honoring heroes altogether. The idea of the article was ultimately that we should honor groups like BLM instead, which as far as I'm concerned just leads to the same problem, since groups are made up of people and also have a problematic side, but I think you might be right. You could argue that we're just turning history into a new religion with the focus on heroes.
On the other hand, there are some historical figures who have a quasi-mythical status--I'm thinking of Joan of Arc or Vercingetorix in France. Granted, France has got its problems and I'm not sure that holding people like this up as national heroes does them justice, given that one is medieval and the other classical and neither has anything to do with modern France.