All backups are incremental, so all local backups together "count" as one full backup and all remote backups "count" as one full backup. And I take a backup of my SSD to a local HDD and from that to a hosted storage solution. I also have an old full backup on an external disk which is in my book shelf. I guess I'm pretty much fulfilling the 3:2:1 rule, right?
By the way I literally counted all backups and there are 51 unique (incremental) backups,