They were never serious about it, actually. If I had to guess, I would say it was cheap attempt by them to further deceive newbies and those unaware of their reputation, by posing as a casino which cared about the well being of their gamblers or even providing a high quality experience.
Were you around when their domain got alledgely bought (actually hacked) and some of the criminals were demanding up to 1-5 BTC for them to give it back? It was a hot mess, because in the meantime, the hackers pretended to be the next owners of the domain/casino and asked for people to post their account information for them to recover their money. A lot of inactive accounts appeared in that thread, it was very pathetic of those scammers and hackers to bite each other for such an infamous domain name.
regarding the "hacking" part, was there a thread about it? I might have missed it, I don't follow all the drama surrounding 1xbit, would you mind sharing a link to it(if possible)?