It's said about brain that, "use it or lose it" — now, question being, do you think if person plays brainless gambling games such as slots, dice for major part of his/her daily routine, will it make him/her dull?
Edit: "brainless" as in playing gambling games that does not require using brain, I thought it was clear especially given examples.
It does. Have you see the impact of kids who are scrolling tik tok or instagram all they long? Nobody can disprove that it does, there are plenty of examples.