In my opinion, Bitblender really gave much low time for withdrawals before they completely shut down.
Within this short time, I don't think all the users of Bitblender will get notified about this. Maybe we will see some complaints in the future.

Everything was done hurriedly perhaps to avoid being the next victims.
I have a feeling that the owner of Bitblender knew they were also being targeted somehow after the seizure of Bitmixer.io
So everything was done on short notice. If bitblender had really wanted to close of their business for other reasons. I don't think we would have been seeing their signature campaign here up to the very last day and a very abrupt announcement about the closure.