I definitely don't think it would be accurate to classify it as a robbery, because they have very openly stated that they were not going to support the fork and gave everyone the opportunity to move their funds into a wallet that you are able to control the private keys.

They gave I think a few weeks notice.  I was wondering if they were going to have a problem processing all the withdrawals.   I left a little bit at coinbase, but not much as I don't make it a habit to store much there, especially since sending BTC to other addresses is even now super slow using coinbase.   

I basically only use it to purchase BTC...and that has become a disappointment since the $1000 instant purchase is no longer available either (to my knowledge).