I highly recommend switching to something more like Arq and then using whatever backend storage that you want. There are probably some other open source ways to do it, etc, but Arq scratches the itch of having control over your backups and putting them where you want with a GUI to easily configure/keep track of what is going on.
Maybe there's something newer/better now (and I bought lifetime licenses of it long ago), but it works for me.
That said, I use Arq + Backblaze storage and I think my monthly bill is very low, like under $5. Though I haven't backed-up much media there yet, but I do have control over what is being backed-up.
If you are a stickler about automation, easily repeatable system state, and being able to bootstrap new projects without having to eff around with the crap show of Ruby/Python/Node envs and how every person likes to use different tools for setting those up, or even just making it simple to have repeatable envs for go and rust, its great. Especially because you can do it without getting Docker/containerd involved.
Works great for getting a basic repeatable CI type build up and running without having to get CI or a big build system involved. Those are the right tools in the right situations, but for small teams or personal projects, I'm not going through the hassle and JVM dependencies of Bazel, Gradle, etc.
I also use it to manage my local system tools in my dotfiles (in combination with chezmoi).
If you think of it more of in the context of making it easy for people other than you and your bespoke machine to bootstrap a project, that's where it really shines. The toml config is very simple for people to understand.
I use it because I want people to be able to get projects up and running quickly without having to comb through an outdated README, trying to deal with all of the different ways people like to install and use non-compiled languages, etc. Managing anything Node/Ruby/Python is all annoying.
Taskfile is so much better. mise is what actually got me to start switching everything to Taskfile instead of Makefile as mise easily handles bootstrapping Taskfile and anything else you would need.
Had been using make for simple tasks for ~8 years and just got tired of how limiting it is.
Maybe there's something newer/better now (and I bought lifetime licenses of it long ago), but it works for me.
That said, I use Arq + Backblaze storage and I think my monthly bill is very low, like under $5. Though I haven't backed-up much media there yet, but I do have control over what is being backed-up.