In one sense, Plato’s Cave Alegory is the perfect criticism of Platonism.
There might be an element of extemporaneous simplification there, but Platonism basically is saying that the idea of a triangle is more real than a triangle made of wood. This is taking flat, featureless and unreachable things in preference to actual things. Plato’s prisoners prefer the shadows than the objects that cast them. That puts Plato as the prisoner, not the free man.
Then again, flat and featureless things are easier to parse, so you could expect the cognitive system to prefer attaching to those and thus feel Platonism as more expedient. Maybe that’s why MineCraft is such huge success. Low-res pixelated images as “more Platonic”.