Some laptops have gone the Apple route and soldered down their storage. Other laptops have a whitelist for hardware they’ll accept (though that’s mostly for WiFi cards). There are some real shitty laptops out there.
With modern USB speeds, that still shouldn’t be a problem, but there are situations where upgrading the SSD isn’t an option.
Is it that hard in the days of solid state NVME drives? You just pop open the hatch and pop them in the slot.
Assuming you have a spare slot (and your laptop is designed in a way to make that swap easy)
Some laptops have gone the Apple route and soldered down their storage. Other laptops have a whitelist for hardware they’ll accept (though that’s mostly for WiFi cards). There are some real shitty laptops out there.
With modern USB speeds, that still shouldn’t be a problem, but there are situations where upgrading the SSD isn’t an option.