I think the point is telling who to get off (whilst letting others stay onboard) rather than getting volunteers is poor form. Yes it's easiest for the airlines to just tell people to get off but it hardly provides a good customer experience. Whereas with volunteers you end up with a situation where both parties benefit.
The airline's not going to know who shifting is going to cause the least inconvenience. Sure they're unlikely to shift someone who uses a wheelchair but what about someone who struggles to walk long distances but tries to keep that quiet and doesn't use a wheelchair? For what might be a smaller level of inconvenience for someone like me (if the next flight isn't far away), could be a major inconvenience for another passenger.
I think everyone understands that mechanical problems happen and everyone could have to be offloaded to another plane or other flights. However, forcibly offloading just some passengers from the customer experience perspective is pretty much the same as being forcibly offloaded due to overbooking. The passengers that remain onboard have been given preferential treatment and you've had no say in the matter.
The airline's not going to know who shifting is going to cause the least inconvenience. Sure they're unlikely to shift someone who uses a wheelchair but what about someone who struggles to walk long distances but tries to keep that quiet and doesn't use a wheelchair? For what might be a smaller level of inconvenience for someone like me (if the next flight isn't far away), could be a major inconvenience for another passenger.
I think everyone understands that mechanical problems happen and everyone could have to be offloaded to another plane or other flights. However, forcibly offloading just some passengers from the customer experience perspective is pretty much the same as being forcibly offloaded due to overbooking. The passengers that remain onboard have been given preferential treatment and you've had no say in the matter.