As far as the station is concerned, they are "in compliance", so they need feedback from the viewer to track down any problems.
If you can call the FCC, you can call the station and talk to someone who is knowledgeable about the situation, and is in a position to give you answers , or fix the problem.
Not every station has it, but the major ones have logging systems that allow the engineers to go back and analyze the program, so they can look at specific instances.
As for "time".....the manufacturers are still making initial deliveries of the equipment to stations, Cable companies, and satellite operators. There was not a lot of lead time on all this. After the law was finalized, the equipment had to be designed, tested, manufactured and installed. It's also possible that DirecTV (and others) have increased their overall levels as part of putting thing in compliance with the law......we are all supposed to match in average levels. That's not to say that every show will have the exact same volume as all others, but the averages of all the shows should be in the same range.
BTW, the averages are across the whole show, not just a scene or a segment. A show that has lots of dynamic range will still average at a certain level, and the commercials will average similarly....."Loud show, loud commercials". They figure, you have set your TV to a comfortable level with the program, the commercials can be at the same average level, too.