Do you really expect an authorative answer to this ?
If your 'Blu-ray' disk does not play in ALL Blu-Ray players then it is not a Blu-Ray disk. Right ?
If you send out disks then you owe it to the people who recieve them to ensure that they play and not to blame the peoples' players.
And you do that by using fully compliant software and not something that clearly states 'should play'