This is not really directly comparable to those older designs (or the Fairphone). It’s more of a middle-ground - you still need to undo multiple screws and use a prying tool to gain access to the battery, so it’s not something you can do anywhere or in a handful of seconds like you could with older models. You don’t get particularly great dust or water proofing for these inconveniences either (reminder that the Galaxy S5, which is over 10 years older than these phones, had an IP67 rating with a back cover and battery that could be removed in seconds with your hands).