So I started a post on the Facebook as to why we do not see more Y6 multirotors being flown. It would appear that the majority of drones are the normal x4&x8 or Hexa or Octo configurations.
Someone said that according to the develepers the Y6 drone software is not as advanced as other configurations and the Y6 drones are not as stable other configurations.
That is also not 100% true. Of course a X8 is better, but it also has more motors.
But Y6 is better than quadcopters. Again because it has more motors and is more resilient to error.