I didn't post about backups to imply that they're the solution to ransomware. But having seen what ransomware can do, I know that backups can be the difference between loss of productivity, and the end of the business.

If you are keeping to best practice, including the things you recommend, then you should hopefully never need backups. But I see backups akin to seat belts, motorcycle helmets, fire extinguishers, et. al. They are things you should hopefully never need if you aren't doing anything stupid or dangerous, but if the situation ever goes sideways, can be the difference between surviving or not.