why blackbaze personal plan is recommended?

Honestly don't know why is so often recommended. I didn't like it. After installation it showed me that I have 8TB for backup and immediately started the process without asking anything. First of all, I don't have that much data, it must calculated capacity of the all the cloud drives, secondly, a backup of a running database or virtual machine is pointless. I am sure that restoring it won't work, besides, these are very large files like 100GB, that change frequently, so approach to the backup should be different. And another important thing is that it won't do a backup for files that are only in the cloud, so the whole idea of ​​backup doesn't work.