It's really not that bad at all. Remember, restaurant capacity is NOWHERE near park capacity. Not even close. And yes, the dining plan popularity is chanigng the ADR situation. We were NEVER a TS family before now. In fact, I got the idning plan and still planned to just do mostly CS and a few trails' end meals. (It's never really hard to get in there.) But about a month or so ago my dh said I should make some ADR's just in case and I got nearly everythign I wanted. I changed things around for a few weeks and I didn't notice anything really booking up for that time until about 2 weeks ago. (we're there the same time as you.)
As for the crowds, yes, it is more popular than it used to be during that time. I hear stories of DEAD parks during that time frame years ago. WDW is just more popular in general right now, but this is STILL one of the best times of the year to go. A lot of people simply will not take off of work or school right between Thanksgiving and Christmas.
But I wouldn't equate lack of ADR availability with crowds in lines, etc.
Hope that helps!
Meg