This really kills me about Backblaze. I'd love to support them, I'd prefer no other backup vendor. That's why this is so hurtful:
https://help.backblaze.com/hc/en-us/articles/217664628-Is-Ba...
Spoiler alert, the answer is a surprisingly firm no. Not even an optimistic "we're working on it!".
Doesn't even have to be "Linux support", just open an API, we'll do the rest! Use quotas for API users if the concern is around abuse, but please help us Linux folks use your service! Please!