People called Apple crazy when they got rid of Floppy drive.
People called Apple crazy when they got rid of optical drive.
People call Apple crazy when they want to get rid of 3.5 inch jack in iPhones.
People called Apple crazy when they redesigned Mac Pro.
When Apple got rid of the floppy drive, there were alternative mediums to go to. Some people found the transition hard, some didn't.
When Apple got rid of the optical drive, some people didn't get it, but most barely use the drive, so it made sense.
When Apple dictate what headphones I can use, I don't like that.
When Apple marched towards soldered components and propriety connectors in personal computers, they improved things, though at the same time made it harder for people to repair/replace/upgrade their own machines, a move I strongly disagree with.
If the Mac Pro 2013 used a standard M.2 connector, we'd be using SM951s with no issue instead (and their R&D would take a lesser hit each time). Some might argue Apple don't get a profit from that kind of upgrade; why don't they offer it then?
As it is, we're at the point where people choose to cling to older products because they like the comfort of knowing they can replace almost anything inside. When you have the ability to upgrade an older machine to outperform the current one, that's a bit daft.