Most oaks will come from stump sprouts. Deer will trim the sprouts to the proper numbers if the deer are not over abundant. Almost all double and triple oak trees you see came from stump shoots and not acorns.
On a second note the ground holds seeds for future forest just waiting for a opening. We call this the seed bank.
Then there are the birds and critters that drop and stash acorns and other seeds. Like you stated they did not pick up all the seeds and they often leave "Wolf" trees. Waugh!
That was really my point, that despite the initial look the first several years cutting and clearing it out is not destroying it forever or anything like that. Yeah it might mean you have to change your favorite deer stand for several years (or maybe not) but that's life.
I spend a lot of time ALL YEAR on several different public lands that have had tracts which have been timbered or burned. I get to see how the wildlife adapts and utilizes these areas that some hunters just write off as destroyed. If someone only shows up when hunting season rolls around or just does a drive by they aren't likely to be able to observe it in the same way and adapt themselves.
There may be something that eats them, but I don't know what they are. They are pretty much worthless, when they get established they kill and prevent the growth of everything else and create essentially a biological desert.
They make a good toilet paper. Also good for lining a wicker creel basket when trout fishing. Other than than that, worthless.