I've been using atmosphere custom firmware for a long time now, mostly to do things like use cheats or make save backups. I have been using USB tools in hekate so I don't need to remove the SD card. I noticed it always says "Make sure to unmount SD card" on the switch. I was always very careful...
I have had cherry "pizza" before basically just a pizza crust with cherry pie filling poured on it and a frosting drizzled on top. Delicious but I would hardly call it a pizza.