I agree with pps that this attitude from an HCP of wanting to shut down discussion about negative experiences individuals have had with their clinicians is a deeply unhealthy attitude.
I would urge any HCPs reading this thread who agree with Prestissimo to do some soul searching and really think about why you think it is a bad thing for patients to express bad experiences they have had.
Really think about why these people may not have felt able to reflect these experiences back to the clinicians concerned and why these experiences (some many years ago) have made such a big impression on them.
In any profession where your behaviour, actions and omissions have such huge impacts on service users, there should be a culture of openness and willingness to learn from mistakes or misjudgments and a genuine desire to listen to people and hear what they are saying about their experiences.
As an HCP myself I know we all receive lots of training about patient-centred care and reflective practice and having a duty to challenge where we feel something is not right. Again I would urge HCPs to ask themselves why they feel it is negative to express bad experiences. Even if the patient was expecting too much of their hcps and their treatment was as it should have been, a discussion around it helps them to understand that they were actually not mistreated. Or it may help HCPs in future to more quickly diagnose something based on learning from that person's experience.
Shutting down conversation doesn't genuinely benefit anyone.
There is myriad evidence to show that certain types of patients (eg women and people from ethnic minorities) receive significantly poorer healthcare than others and shutting down discussion is not going to go any way towards improving these discrepancies.