That's why I never bought Switch. And later with patched hardware, I cannot hack it to be able to backup MY data, so... I'll wait for emulators.
I'm not sure if word "compatible" is accurate. All are compatible but probably locked for such feature. Like i.e in PS3 times where some saves are locked to be copy to USB. Nintendo, and now Sony with PS5 did this to push more PlayStation Minus users and $. If more peoples be like me in this manner, less bullshit they would implement, caution not to piss off clients. :P