Hard disagree. The jankiness of their software was what made me cancel my sub after several years. Firstly it doesn't follow the OS date and number formatting. It's a minor thing, but it's so annoying having to parse the dumb M/D/Y format and comma thousands separator etc (being da-DK). It's not a deal breaker, but on the other hand, it's such a low-hanging thing that most other software gets right immediately.
But far more importantly, the BB client would some times just decide to re-upload several hundred gigabytes of data that I know for sure didn't change, which makes me wonder if it's just the client being retarded or if the data got lost server-side. And it takes absolutely forever to detect USB harddrives being plugged in. And its log files will grow to absurd sizes, and you're not allowed to purge them or the client will become brain damaged. And one time I needed to do a restore, it took literal days for BB to prepare it and I had to get support involved. I feel I just can't trust the BB stack, the client being the weakest link by far, and backup I can't trust is worthless.