experts aren’t wizards

reasonable people can understand

— law - medicine - accounting - investing

if we leave all judgment to experts we won’t be able to do anything or even judge experts

always remember the doctor who barely graduated is still called a doctor…

You don't have to be trained and practicing in a field to know some things about it. Nobody should be making medical decisions solely on the advice of strangers on internet forums, but being a public defender doesn't automatically disqualify someone from being a credible source of sound medical information just like being a doctor doesn't automatically make a person credible.

After all, in my country we have a doctor telling people that their illnesses were caused by demon sperm and being on record saying that medical treatments come from alien DNA yet they're still allowed to keep their medical license and practice thanks to the Texas Medical Board.

It's possible that our public_defender is entirely wrong, but isn't better to attack the false claim than to attack a person or dismiss their opinions on the basis of their job title? Don't you suspect that you yourself have some useful information on things outside of your job description?