I am however slightly averse to building up monthly fees for products that are convenient in general, and this definitely falls into that category. I can't imagine people paying for a backup of a backup, or something you can easily dump into cold storage every now and then. Good luck nonetheless, hope that other people don't share that opinion!
This came from my own necessity. I would occasionally use Takeout as my backup, but downloading more than 50 individual 2GB files was becoming pretty tiresome. Plus, that backup was obsolete the moment I added new photos to my library.
Maybe my workflow is different than others? Google Photos is the only place that all my photos live now. I have multiple devices connected, each sending files to the same library. I did’t have a full backup anywhere, other than the occasional Takeout download.
Agreed, one more monthly subscription not be right for some, but for others the extra piece of mind is worthwhile.