The FAA and the model aircraft folks have an understanding - they have worked with the FAA for many years and kept their members in check (using, among other things, the carrot/stick insurance approach). Before the 2012 law that explicitly orders the FAA to work with the model aircraft folks to come up with reasonable rules, there's been an advisory circular ("this is our interpretation of the rules, just a heads up because we'll enforce them this way") since 1981 that's still basically the rules: AC 91-57. You'll note that they're hardly onerous and really there's been very few problems with the "traditional" model aircraft folks. An advisory circular isn't a rule as such - and in fact one of the court cases over the drones was the judge saying "you can't enforce an AC as an official rule" - but it is broadly speaking "intent to rule". The actual federal air regulations are quite nonspecific and allow a tremendous amount of leeway for the FAA to say exactly what the rule means - and unless the interpretation is deliberately capricious the administrative law judge (basically a trial for regulations, not laws) is bound to their interpretation so they almost always win. Best not to violate the AC, since that's how you know what this interpretation is that they'll hit you with.
The FAA trusts the AMA guys to do this right, and really they've done a remarkably good job and have a many-decade long track record. It's hard to build and fly model aircraft, and if it's a hobby it's much easier to do things "right" by joining a club and using their field and following the rules.
They're not the problem. No, the problem is the drone idiots who go on Amazon and buy a "point and fly" DJI Phantom or something and go to the park and fly it up to check out a police helicopter, or the planes in a major airport's approach path. They have no training, no sense, and no community that will keep them in line. They don't care about being accredited and having insurance - their level of commitment is a few hundred bucks and a couple hours' time.
Irresponsible drone use is ruining it for the rest of the hobbyists. There is responsible use, but since drones are so easy to use, there's a lot more irresponsible use than there was with traditional model planes. It's really that simple. They are causing a safety hazard and forcing the FAA's hand to more proper regulation than their laissez-faire "the AMA seems to be doing this properly" approach of the last 30 years until now.
I am a fixed-wing pilot, anything that can fly through my window at 140MPH pisses me off. Birds are bad enough, but at least they're not metal and we can't really control them. I trust the model aircraft guys to stay low and in their traditional fields and away from my airports. I don't trust the drone guys.
As for incorrect information... the GP was more accurate than you on balance, so maybe look a little deeper next time?