This is the dumbest advice ever. How could that someone will earn bitcoin if he is going to cut his internet connection just to quit gambling? I don't think so, you don't need to do such thing just to quit gambling, if you are really dedicated on doing so, then you just have to quit it and no other things will be affected.
You could quit gambling by diverting your attention on to something more important than gambling. There is a lot of ways on how you could earn money aside from gambling and a lot of safer than gambling.
I don't think that is the dumbest advice but a good enough advice.Gambling is not always about bitcoin, and if you just do it with bitcoin you should be able to ignore bitcoin, you have to do it in total to make you succeed. People who dare not neglect anything will not make a difference. So I think it is a difficult thing but it will give a significant change.
The advice is not bad even the doctors also suggest the same advice if anybody addicted deeply to this gambling. When we are involved anything in deeply and to stop that addiction we have to stay away from that source. Then only it is possible. Taking a holiday and going to long trip with friends and family these methods also help to stop gambling.
I dont think this is what the doctors advice for addicted gamblers. Going on a vacation maybe a good thing to do but once you are back (you obviously have to come back) you will start to gamble again. Or maybe while on vacation the addicted person will find a casino nearby and start gambling. The family support is important no doubt but then there is support at home and one does not need to go on a vacation just because they want support of family.