Well I do pay for their business product, I have a "Business Groups" package with a few dozen endpoints all backing up for $99/year per machine.

According to support's reply just now, my backups are crippled just like every other customer. No git, no cloud synced folders, even if those folders are fully downloaded locally.

(This is also my personal backup strategy for iCloud Drive: one Mac is set to fully download complete iCloud contents, and that Mac backs up to Backblaze.)

That's ridiculous. I use Git for tons of personal projects.