Why not try to find the root cause here first. Where were the parents when their 16 years old son was addicted to gambling ? They should have monitored his activities and this situation would not have raised. You cannot blame the doctors on insufficient medical treatments when the son could have be taught at home to avoid excessive gambling. I would consider it a negligence on parents behalf as it was their first duty to keep an eye on their children.
I think that such stories will appear in the media more and more. Hundreds of thousands or even millions of teenagers did not go out from home to school for many months, but spent their time in front of the computers. Certainly many of them fell into traps set by the marketing tricks of various casinos.
The pandemic situation is unprecedented, so we cannot blame anyone. We have to realize that the consequence of all lockdowns will be these types of new dangers. The only thing we can do now is be aware of it and warn others about it.
Moreover, if the situation at their home is not conducive, it will add to the chaos of the atmosphere and can make teenagers do things beyond what parents can imagine.
It can make them addicted to gambling but maybe even worse because of various kinds of deviations they can do if they can't control themselves.
If they prefer to spend their time on the internet, they will become addicted to it and may socialize less with other friends.