You think correctly - this is this tournament and 1 person was registered for it, another 7 or 8, and the tournament was canceled on the 9th, the tournament was supposed to take place on the 16th - there was still a lot of time to register. I think the CoinPoker administration should know the reason for the cancellation. This is not the first time such tournaments have been canceled, and such actions do not add prestige to the poker room.
Canceling a freeroll tournament is not a thing that affects the prestige of a poker room. It happens occasionally in other popular poker rooms, and I don't think it's worth emphasizing. Most likely coinpoker will have many more freerolls with such prize pools, but for now, you should pay attention to the tournaments of the turbo series, which is now held in the room.