While some of your points are good, and some of the quibbles with them have been addressed in other comments, I'd like to point out the big advantage to specifi

While some of your points are good, and some of the quibbles with them have been addressed in other comments, I'd like to point out the big advantage to specific mechanical keyboards for me: nostalgia and muscle memory. I grew up on the Apple Extended II keyboard and just recently bought myself a new keyboard with Alps switches. It feels like what I grew up with, it feels right to me.