It’s already stigmatised - have you seen the quintessential meth addict/crack whores that hang around gambling/gaming joints?
There has to be a lower class. Not all but most of the people who inhabit it are just where they belong. Interventionist states with paternal social policies can’t magically raise the IQs of the dumbest 20% of their populations by 50 points, alas.
No respectable person goes to a casino except as a gag to throw away expendable income. Some labourer spending 80% of his wages at Ladbroke’s is a symptom of his stupidity, not the cause of it.