Well yeah, this is like the #1 issue with the Switch right now. When I had that black screen I posted a while back and thought my system was dying, I was worried more about the saves than the system. We have cloud saves on every current system, but on the Switch I can't do anything, that's worrying. Just sd backup would be great. That transfer update recently was such a bait and switch. For a second I thought save data backup, before reality hit :p
Same. I saw the announcement with the new system update, thought "WOW, fantastic!" then a few seconds later was extremely disappointed. I have no idea what Nintendo are playing at with save game data backups (or rather, the lack of).