I wonder how much of this may actually be part of a strategy. It quickly became apparent that legislation could not be moved at the federal level before public support waned, but the states were a different story. There was suddenly an excuse to rush forward with new laws in confirmed anti-gun states and to make inroads in other, more gun-friendly states.
The national effort may be a diversion while our flanks are attacked in the states. More gun control IS being imposed, not nationally but on a large part of the population. Harsher restrictions in CA, NY, MA, MD, CO, and CT will cover 79 million people or 25% of the country's population.
One of the objectives of gun control is to make guns less common, more alien to the average person, and socially unacceptable. Further separating a quarter of the population from their gun rights sounds pretty successful in that regard.