If I dropped a Linux admin off at a shop which didn't have emacs on their boxen and he refused to work because he might accidentally screw up a config file, he'd be laughed out of the joint.
If I dropped a plumber off at a job site and she didn't have a particular type of ergonomic monkey wrench she'd grown accustomed to and said she couldn't do the job, she'd be mocked endlessly.
If I dropped a line chef off at a kitchen and they didn't have their favorite knife available and they held up orders for a whole night, their boss would fire them.
~
This custom bespoke medicine nonsense is increasingly seeming to be just that: nonsense.
Sure, there's this .1% chance that you might screw up an intubation, but that seems to be more of an issue of bad training than bad equipment.
As far as your point about differences in patients or physicians: that's a cop-out. Part of being good at what you do (as a dev, as a maker, as a person) is being flexible enough to make do and succeed.
In a system which costs as much as ours does to people who simply can't afford it, we (as a society) cannot afford to cater to the whims of overspecialized professionals.