If they want to promote scum let them, so long as they are doing so in a manner which is not doing me any direct harm.
That is a very short-term, narrow minded view. If a player ends up at a bad casino and gets burned, it may sour them completely about online gambling. Especially if it is someone that has never gambled online before.
The bad casinos that rip off people are fodder for the likes of Senator Kyle and others who want to completely ban online gambling. Why make it any easier for them?