Earlier quoted context omitted.
>Dropbox (and iCloud) are meant more for cloud file storage than pure device-to-device synce Device to device sync was literally the value prop for Dropbox when it launched > 10 years ago. That's why I started using it. Dropbox does now allow a more cloud-native file system / cloud backup usage pattern, but its roots are absolutely "keep my files in sync across several computers."
That was 10 years ago. Yes, I also started using it because of that. These days the the more important feature (at least for me) is being able to offload rarely used files from my drive. SSDs in MacBooks are still crazy expensive.
That's exactly what the article author is saying.