A couple of points I can think off:
How proactive were the streamer/affiliates regarding gambling problems before they got banned on youtube?
The gambling industry contributes to their income stream, they just have to been seen to meeting the criteria imposed upon them.
Personally I think we are told as a society what we can and can’t do all to much.
Working, the incomes that come from working and what the money goes towards providing the essentials for living are the main causes of problems in this country.
Everything else is nanny state interference.