well as i said in my message, let it go. it is nice to help those who are new, but if they refuse to take your advice you'll just hurt yourself. [the old take a horse to water but can't make it drink problem.]
you've given them your knowledge, there's nothing more you can do. best to work on yourself instead of wasting energy on people who choose to do the opposite of what you say. if they ask for your advice, give it, but stop jumping up and down shouting the facts when they're not listening.