It's not just confusing, it's total bullshit. Graviton made for the community more than most of us. If someone doesn't like fees, then remember how much money did you make on Dgex or outside it but because there was such thing as Dgex. If there was no Dgex and nextcoin.org we'd still have Nxt around 0.000001 Btc and one thread here on bitcointalk.
When one do not charge you to get in and later do not allow you to get out for free than it is called a scam. Very simple.
On a funny note, check nxt:rawdog
Peace!
First of all he notified in advance about fees. He was going to add them after Dec 20. Second, any exchage can change fee based on current situation. Btc-e, MtGox, Dgex, whatever. If you don't like it, don't deal with them.