Mostly, they are good people wanting to do good work, but imo, public health agencies have become a para-intelligence services with explicitly political aims. There is a network of academics who see health and health information as a policy lever, and they have been out in force leveraging it through public health agencies during the pandemic.
I think they have discredited themselves over travel bans, vax passports, the objectively insane and poisonous rhetoric about the "hesitant," and arbitrary mandates with no accountability for those who enforced them. I don't think they can be trusted to be arbiters of science for people with a basic statistical reasoning skills and a belief in the existence of truth. The article articulates a more general and relevant sentiment, which is that the medical establishment has forfeited its public trust.