Actually, kind of the opposite. A few years ago Backblaze posted that the economics of their solution relied on the average customer having less than 1.2TB of data. They explicitly do not support Linux users because they tend to average a larger amount of data and are thus not economical to support, even ignoring the extra costs to maintain a separate Linux client.
But Backblaze is marketing itself towards people who do. The average person is not a backblaze customer