I pre-shrink my W&N if I want to avoid the crinkle.
I'm brave, I stuff it in to the washer on the rinse cycle. In my machine, it has a part of the cycle where it spins as it's spraying water over the batting; I run it through that part of the cycle a couple times so the whole batting is wet but not soaking wet.
Then I shove it in the dryer on HOT. (Told you, brave!)
It comes out fluffy and soft and all the creases are gone. I've never had trouble with it; no holes, no thin spots, no bearding. Today's battings are pretty rugged things!
I've done this with W&N & with the Pellon "Nature's Touch" Joann's cotton batt and both have held up perfectly fine.
I wouldn't do that process with a cotton batt that didn't have scrim, though. And never tried it with wool or bamboo.