HIPAA provides an effective strategy for holding Zoom’s feet to the fire in cases like this. Since the company markets compliant video conferencing for healthcare professionals, they are classified as a Business Associate. It is quite likely that a well-written complaint on the HHS Office of Civil Rights site would result in further investigation and regulatory action.
Only insofar as that people usually do not complain. I’ve worked with software clients on OCR investigations that were prompted by far less substantial complaints.