No, you do need to make your case--i.e. mount an argument based on evidence and reason--if you want me to believe "scientism" is real. That it has a "standard definition" is not enough. After all, you can look up in any dictionary the standard definitions for other things that are also not real, like clairvoyance, telekinesis, and palmistry. Until you or someone else does make a case, I'm going to continue believing scientism is little more than a cry from charlatans who lost the attention of their audience.