I do not see why serious hobby flyers should be worried with some kind of regulations about this.
The new technologies are allowing drones to fly higher and further away and everyday there are heavier drones avalaible. Actually you can nicely fly a DJI S1000+ that is a heavier and more powerful aircraft with the same requirements you fly a 2 inches Nanodrone, that is none.
A line must be drawn about what is a "toy" and usual "hobby flying" from what is an industry tool and commercial operations.
People operating such aircraft must know if the airspace they are using, is restricted in some way or not.
People cannot expect to be able to freely transit the actually highly regulated sky full of aircrafts with "uncontrolled" toys at 10000 feet for instance.
Neither overfly Military installations, Nuclear powerplants, prissions, enter the airspace of a firefighting or rescue operation......all this must be regulated because as you may be aware.....common sense is the less common of all senses
Basically hobby flying would be just restricted to stay out of controlled airspace, out of cities or congested areas and below 400 feet AGL.
Same thing the R/C community has been doing for years with no real troubles
This is just common sense regulations and I do not think this would create any trouble to most of the serious drone pilots that will continue flying having fun with their drones under the new regulations.
The smart and respectufl hobby flyer will find in regulations a supporting framework where to continue to operate and having fun with no problems with his hobby while this activity not being stigmatized by the actions of a small group.
Drone Regulations like it or not would be implemented worldwide, that is unavoidable, the question is to make sure that normal and hobby flying is not greatly affected by it.