Is the 'Average Age' column months?
This graph from the current results article seems relevant:
Edit: Two thoughts occur to me here - I have always applauded Backblaze for publishing this data - but as they move away from smaller capacity drives (I can't believe I'm referring to 4TB drives as "smaller" - ha), their failure rate data will mean less and less with regards to consumers and those that service consumers. Secondly, I think I sold less than 5 hard drives in the last year. This data is moving from the "useful" column to the "entertainment" column for me, that's for sure.