betting is not good a choice .you can invest your bitcoin in a good project, we have many of them.by investing them wisely not on betting or schemes.betting is game of luck,it is not good to start with as newbie
Seems a good idea that newbie needs to choose the better way of earning bitcoin or profit. If they need to or want to gamble, ask them first. But for me, it's worth to try those newbie to gamble but it will be better if they will only gamble with play money or with free trials so that if they lose, there's nothing to worry and feel sorry about it.
Actually gambling will just give loss and loss only and we are addicted so we can't stop gambling at all but yes if we see a newbie entering this dark world I would personally take a step and teach them about the negative aspects.
Some people have a tendency of " I gave loss, I will make sure everyone losses " while I am sort of guy who believes " I have lost, won't let that happen to others ".