Great advice. I have learned – it is pointless trying to explain your thoughts, to anyone who is committed to not listening. Some people don’t want to learn and grow. Some people don’t want to challenge themselves, or their thoughts. Some people don’t want to hear a different view. Some people chose not to have a path of self insight/self honesty. For a variety of reasons.
So, leave them to it. Their life is their responsibility only. Have needed and healthy boundaries, and continue on in your own journey of growth.
Find those who are mature, or are on a growth journey. And when you find them, you will know.