I am sure that these methods are almost never used by anyone. And I hope all the major well-known casinos prohibit such operations on their sites.
That's why there is a wagering requirement for deposit (1x-2x) in most casinos. This term is implemented to avoid such money laundering attempt. As what the main idea of this topic which is related to the chance for money launderers to do their laundry in casino by using high odds strategy while playing, this strategy will not help the launderer to avoid the risk of losing all the deposited money. Once again I have to say that betting with high odds is not a loophole in stopping money laundering because there is a big risk.