I would like BackBlaze to back up files I have in iCloud Drive just in case there is a problem with iCloud. Am I being too paranoid? I have enough space on my iMac to keep the files on my computer but others may prefer to have extra free space on their computers. Comments?
If it’s on your physical drive you might as well let Backblaze back it up - it’s not like it costs anything extra (unless you pay for bandwidth).
My experience is that Backblaze DOES backup files in iCLoud drive (if they’ve been removed from local storage because you have “Optimize storage” enabled, things might get a bit complicated).