Nonsense. He was a despicable weasel traitor who murdered the nephews and usurped the throne he was sworn to protect.
No, he was not. He was a great general, a brilliant administrator of the north of England (basically a viceroy) and the right arm of his brother King Edward. Traitor? That’s foolish! There was no man more loyal to England. He implemented bail so that weaselly nobles could not steal the land of poor peasants who were arrested on minor charges and refused to take money during his many progresses and abolished benevolences. His first (and last) Parliament was an absolute model of good governance. Personally, he was noted for his good morals - unlike his brother who squandered his health and legacy on wine, women and greed.
When Richard died, the city of York (where he spent the bulk of his life) mourned his death in writing - that’s saying a lot considering Henry Tudor was a mean man. Later, Henry’s tax collector was brutally lynched to the cries of “Revenge King Richard!”
So there.