How do you think gambling addiction is diagnosed? By asking the patient about their gambling habits and how it impacts their lives (or as you put it "how they feel about their gambling").
When you come from the POV that all -EV gambling is problem gambling, then I don't see any point in discussing this. Almost every pastime costs money and is -EV, but that does not in itself make them societal problems.
To me, and the professional community, problem gambling is gambling that causes financial and/or social problems for the gambler. That people in your view waste their money on -EV activities is not in itself a social problem that society needs to concern itself with,
IMO.
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