Short answer: probably not.
Is there any business value in tracking backups? In other words, can you improve operational efficiency, increase revenue or defer costs in excess of expenses by doing so?
One scenario to track backups as CIs would occur if the cost of loss (I.e to reputation) is significantly in excess of tracking costs, and the status of the CIs can be updated throughout their life cycle. This is especially true if tracking can be automated.
I am not aware of any companies doing this. In most cases a process or operating manual provides sufficient control of backups.