There is some evidence of him playing with corked bats, so much for his record. In my eyes, this is far worse then the gambling.
Wrong. Gambling damn near killed baseball in 1920. Individuals looking for a marginal advantage at the plate with a corked bat or using roids is one thing. They should be punished.
A player, especially a manager, having a financial interest, perhaps even a overwhelming incentive, via gambling in the outcome of a game attacks the very integrity of the game.
Look up the Black Sox scandal if you don't understand the difference. It damn near killed baseball. Pete Rose knew about it but he being the arrogant narcissist he is, didn't give a damn.