I think the best way to shut up bitcoin haters is to prove that you are earning on bitcoin. When I was starting at bitcoin, there are a lot of negative comments from my friends and they were always telling me to be cautious. Only a few of them supported me and those people are investing on bitcoin as well. They are earning enough money for their needs and they never regret investing on bitcoin even if the price goes up and down.
I guess it is better to also shut your mouth when you are being judged by haters. You will just become stressed if you mind them. What if you failed on your career in bitcoin, then they will have more things to say. So I think the ideal way to deal with them is to shut up and let them eat what they said.