anti-psychiatry" is seen as derogatory. By being labeled as such, many arguments are dismissed. For this reason it is reasonable that the case of Mrs Packard is adorned with the template of "anti-psychiatry" after all she founded the Anti-Insane Asylum Society and wrote several books to make her case.
Mrs Packard was committed to an asylum because a husband could have his wife committed without either a public hearing or her consent. She disagreed with him about religion and the couple also disagreed on child rearing, family finances, and the issue of slavery. In 1863, in part due to pressure from her children who wished her released, the doctors declared that she was incurable and discharged her.
Mrs Packard wrote several books about and founded the "Anti-Insane Asylum Society". In 1867, the State of Illinois passed a "Bill for the Protection of Personal Liberty" which guaranteed all people accused of insanity, including wives, had the right to a public hearing. She also saw similar laws passed in three other states.
When this is what anti-psychiatry is about, I do question the use of "anti-psychiatry" as something negative.