Comment by dotnet00

I've seen actual psychiatrists suggesting meditation or yoga as additional ways to help with certain issues (eg anxiety) along with medicine, and the benefits of say, just conscious, controlled breathing as is involved in both are obvious to anyone who has a temper.

I wouldn't be surprised if the idea that it's completely useless because it can't be scientifically observed in a traditional sense is highly correlated with people who think that mental health issues aren't real in general.