It was, especially since I consider that a hindrance to using the newer devices for 10-years, which the older ones can happily do with a properly-imaged new SD card. Even though I love my Sage, it makes me consider whether I should grab a Libra 2 if I ever see it on the cheap, just to have a comparable device that still has the memory on a SD card.
The Kobo's that just launched claim they will have better repair-ability through a partnership with iFixIt, so maybe we'll see how that impacts the ability to change the storage.