"If a paid for, off-droplet, commercial *regular* backup solution ..."
You're actually not. I could be wrong, but last I heard, D.O. had yet to start charging for backups.
"... doesn't do what it says, then saying 'Don't put all your eggs in one basket' doesn't really address the point."
Look, nobody was saying that you should not have made D.O. aware of the fact that its backups were not working.
If you spend enough time perusing these threads, you'll encounter an unfortunately amount of people that have mission critical data on a cloud server w/o maintaining an off-site backup; only to go through the excruciating experience of losing their data and realizing that given that nothing on planet Earth is perfect, neither is DigitalOcean; and just like other Internet giants DigitalOcean, too, is susceptible to hardware failures that will result in lost data from time to time (just like its happened to Amazon, GoDaddy, Google, to name a few).