You are clearly one of the lucky ones since 1xbit do actually return some player funds randomly in order to make themselves look legit in order to scam more gamblers later on which has basically been their modus operandi from a long time.
Is the refund only for active accounts that have reported about 1xbit on the BTT forum, I agree that they have set up a refund strategy for random users to look legitimate in the gambling community of this forum. Whatever efforts are made to improve its reputation despite allocating funds for a signature campaign with participant capacity (redtrust) to promote 1xbit in every gambling thread.