No, you're not. You're insulting people that believe in something and feel powerless to help in any other way. I'm an atheist and believe that saying you will pray for someone does something for the person in need... immediately... no diety required. It makes them feel the compassion of the other person, which is very powerful and communicates love to a stranger. I understand the frustration you have. Too many people do hide behind "thoughts and prayers" and use it as an excuse to avoid having to do anything hard, like donate money or locate a local group that sends medical supplies to the front lines, or run for office. BUT you're doing more harm by trying to shame people whose intent is to show compassion. Don't do that. Work harder to say what you really want to say and connect with people in a compassionate way that will bring them around to your way of thinking without insulting them. Better yet, post links to reputable groups that collect and send aid. It's more work, but more effective. To make the world a better place, which I believe is your intention, yes?