Comment by cweagans
Sure, Dokku is still valuable without it. I've seen a ton of recommendations over the years to "just use Dokku" when people ask about simple hosting setups for their side hustle or whatever though. In that context, Dokku isn't really a viable option unless backups are in place - ideally OOTB. Without having backups OOTB, the idea of Dokku being a really easy way to get going is a little bit diluted, don't you think?
I sort of see it the same way as "just install Linux Mint, it's great, you'll love it", but when something doesn't work, it's "oh yeah, just open the terminal and ________": opening the terminal is the _last_ thing people want to do if they just wanna read their email or whatever.
My comment comes from the lack of backup and restore systems for nearly all projects that I've seen, especially open source for services and applications.