The ultimate lesson is that science isn't special - at least not anymore. Maybe back when Einstein talked to Niels Bohr, and there were only a few dozen important workers in every field. But there are now three million researchers in America. It's no longer a calling, it's a career. It's practitioners aren't saints, they're human beings, and they do what human beings do - lie, cheat, steal from one another, sue, hide data, fake data, overstate their own importance, and denigrate opposing views unfairly. That's human nature. It isn't going to change.
But sounds like he could be writing about the IPCC