No, the pure label "Therapeut" is not restricted in any way. Some specific labels for types of therapists are, e.g. a Psychotherapeut has to go through an approbation process like other medical titles.
Right but when someone looks for a therapist for mental health in germany they look for a "psychotherapist", since that is the one that offers psychotherapy
"With the exception of some therapeutic professions, the term therapist is unprotected in the Netherlands and Belgium."