I don't get why people try to claim that reality is false

Jesus said, "Let him who seeks continue seeking until he finds. When he finds, he will become troubled. When he becomes troubled, he will be astonished and he will rule over all.". This is Plato's allegory of the cave. If you don't know it, go ahead and do a search... it's a wonderful story told by Plato. The prisoner who escapes the cave and sees the real world with sunlight? At first, it's painful. It's confusing. The light blinds him. But if he persists, eventually he sees the truth. And then he returns to the cave with knowledge and wisdom that the other prisoners don't have. So the spiritual path is painful. It involves confusion and struggle. But if you persist, you will see reality as it truly is.