It is true that the advice is good and that life in general is like a process of constant learning.  But I must note that at some point in a person’s life this process begins to move not in the direction of acquiring new skills and knowledge, but rather in the opposite direction, when knowledge and skills begin to be forgotten and lost.  It is not for nothing that in old age many people become as helpless as children.  As an example, it is enough to look at some facts in the public speeches of the American president True, there is a possibility that all these absurd actions of the president are just a performance for the public.  This is just a prank to increase ratings.  But this is a separate conversation and is not for this topic. 
So, loss of gambling skills also occurs and such a player eventually stops playing or severely limits his games.  But this of course happens for different people at different ages.