Going all-flash was compelling for a while, but it seems like SSDs have failed to deliver on some important promises:
* The whole "it's SLC cache until you fill it up, then drops to pretty mediocre performance" thing is frightening because I suspect a lot of reviews aren't sufficiently battering the drive to report on this. I gather this is a bigger problem as they move to TLC and QLC and beyond and any corner-cutting they can do in the controller. TBH, I'd love to see sanctioned first-party tooling to manage my overprovision and caching strategy, so if I want to spend $130 to turn a 2Gb drive into a really overbuilt 512Gb drive, let me.
* The "we don't guarantee it will maintain data if left unpowered for 3 months" story doesn't make it a great choice for cold storage/intermittent access. If you just plug in a drive once a year to back up your tax returns, I'm not sure you want a SSD for it.
I ended up setting up a NAS with a cheap spinning-rust drive, figure that gives me a different reliability profile than the flash for that tier of backup.