Not new. This is a product of the “Frankfurt School” which subsumed a bunch of disciplines in the US, including psychiatry. Declaring opposition to Communist goals a form of mental illness is standard procedure.
Communist goal 32. Support any socialist movement to give centralized control over any part of the culture--education, social agencies, welfare programs, mental health clinics, etc.
Finally Communist Goals 38. Transfer some of the powers of arrest from the police to social agencies. Treat all behavioral problems as psychiatric disorders which no one but psychiatrists can understand [or treat].
39. Dominate the psychiatric profession and use mental health laws as a means of gaining coercive control over those who oppose Communist goals.