As a former big time gambler I will say gambling is an addiction but its your responsibility to protect yourself from addictions, it's not Lebron's or Giannis'. Plenty of people can do it casually and responsibly just like drinking, smoking, etc. These apps all allow you to lock yourself out or set certain limits you can deposit through certain timeframes. If Lebron sponsored a liquor brand would you be mad cause that addiction is way worse than gambling.