This kinda insult is just lazy. Right-wingers say "I used to be left wing then grew up when I read economics", left-wingers say the same in inverse. The real answer is just that you had views that were based on an intuition or something, then you read stuff interrogating those views, realized that may align more with your values and changed your mind. That doesn't mean that there aren't people with different values than you, or people who now disagree with you are all the same as you.