I've always thought that characters who insist they can taste the difference are just being weird snobs.
I also assume that all Starfleet NCOs know how to override the synthehol setting
One thing the Orville did that Trek was too cowardly to do is mention that killing and eating an animal is seen as legally and morally tantamount to murder. So while Starfleet officers treated Riker's real eggs as a special treat, Union officers would have responded with shock and horror.
