It's a great pity but I won't be buy more Ubiquiti hardware unless their direction improves. I loved the Ubiquiti hardware until a year or so ago. It was well spec'd, well priced, reliable, and it was easy to upgrade to OpenWrt. (Changing to OpenWrt was definitely an upgrade - get away from their you-must-do-it-our-way software. OpenWrt isn't perfect but mostly just works.)

But Ubiquiti have changed. The new hardware is silly - little screens and do-everything-on-an-app-with-our-cloud firmware. It's my infrastructure, I don't want to rely on your cloud! I only hope they go back to making good hardware and letting us use it for what we want.

For that use case SMB with Time Machine you just need a mini PC type that you can install Linux or BSD OS, and the Samba configuration is really simple, up to 20 lines in one conf file to support Apple Time machine. It will always be up to date, secure and support latest SMB protocol features, unlike any pre-built NAS devices.