Then they wouldn't be Platonists, would they? Wait, do people here even understand what Platonism means? Rejection of evidence is a key tenet of that philosophy. This is why the other school of thought is called Empiricists - because they believe in empirical evidence. It's frustrating getting all these downvotes by people that don't understand their own words, but I suppose it's not surprising coming from Platonists. Folks who, when faced with a contradiction between reality and their cherished beliefs, conclude reality must be wrong.
Neither the Britannica article on Platonism https://www.britannica.com/topic/Platonism or the Wikipedia one seem to mention rejection of evidence. I think maybe you have an unusual take on Platonism?