This is a confusing misinterpretation of the parent comment. He isn't saying it isn't easy to count cards, rather that there isn't a widely seen public method t

This is a confusing misinterpretation of the parent comment. He isn't saying it isn't easy to count cards, rather that there isn't a widely seen public method to do it in 2020, and that there isn't math to prove it is profitable with casinos targeting advantaged players.