definitely wouldn't advise gambling as a source of income for anyone
of course you can find positive expected value games but there are less stressful ways to make money, in my opinion
I think it's okay to suggest that to anyone as long as you educate them well of the risk of gambling. Yes, the income is so attractive for a successful gambler, however, it's not as easy as we think, a gambler has to be very smart in order to make a living in gambling, so if you find a gambler that has that kind of quality, then maybe we should not limit the possibility that he could be successful in gambling.