I'm not complaining at all. I just find it interesting that at one organisation this 'reporting-out' is accepted if not proactively encouraged. A more old school organisation might come down hard on an employee.
This might actually be part of his job. Why would HR have anything to say about it? Engineers do tech conferences as 'employee of XYZ,' how are product reviews any different, assuming they're in context?
Depends on how busy the HR dept is I guess.