Finally I put my finger on it: they don't just don't have the character of the beloved older machines.
Compare them to vintage cars, for example:
Retro Cool vs. Ho-Hum
This is without even taking into account that every machine on the left still WORKS, while those on the right will be toast in just a few years. (Even if the cars are still running, their computerized systems will be obsolete, and no one is going to want to restore them like the ones on the left - because why would they?)