If they had full support for side loading, and supported the thunderbolt standard I feel most of my hardware problems could be solved with a type c case that’s adds it a headphone jack and SD card slot
My list of problems: Too expensive, no 3.5 mm Headphone jack, no expandable storage, lack of foss apps and stores like f-droid, and the lack freedom to install and do what I want with the device I payed for.
I see this as a non issue since it requires physical access to the key and would require them to know your email or have access to your computer.
That list of people would already be able to access your key any time anyway so they wouldn’t need to clone it 🤷🏻♀️