Can second Kopia! The deduplication works like a charm.
I've recently started using Immich (I previously used Google Photos). And since I've backed up a recent Google Takeout archive (unzipped), backing up all of my images in Immich added just a couple hundered megabytes (over ~200GB of images).
Edit: also, don't discount paying for some cloud storage for backups entirely: I never wanted to do that since I wanted to host it myself, but there's multiple reasons to have one of your backup targets be a cloud storage (yes, I know I'm in the selfhosted community):
it's definitely physically seperate
most cloud storage has incredibly reliable storage (which is hard to replicate on most home-storage-budgets)
the cost can be very low even compared to buying disks (I pay 20$/year for 1TB, which can hold all of my valuable data easily, obviously not my "bulk stuff").
Just throwing out an option, not saying it's the best:
If you are comfortable with Linux (or you want to be come intimately familiar with it), then you can just run your favorite distribution. Running a couple of docker containers can be done on anything easily.
What you're losing is usually the simple configuration GUI and some built-in features such as automatic backups. What you gain is absolute control over everything. That tradeoff is definitely not for everyone, but it's what I picked and I'm quite happy with it.
So theoretically if someone has alrady set up their NAS (custom Debian with ZFS root instead of TrueNAS, but shouldn't matter), it sounds like it should be relatively straightforward to migrate all of that into a Proxmox VM, by installing Proxmox "under it", right? Only thing I'd need right now is some SSD for Proxmox itself.
I agree with the learning curve (personally I found it worthwhile, but that's subjective).
But how does ZFS limit easy backup options? IMO it only adds options (like zfs send/receive) but any backup solution that works with any other file systems should work just as well with ZFS (potentially better since you can use snapshots to make sure any backup is internally consistent).
But the only thing causing mind on my doubt is how excessively impulsive and not-in-control-of-himself Enlo often seems. That's the only thing that makes "this is just a serious of very stupid decisions made in the heat of the moment" even somewhat plausible.
I think my position on that was made clear enough by my original post and my reply.
You might have been asking in entirely good faith, but the issue is that this "oh, can you please explain your point of view to me" approach is so extremely frequently presented in bad faith and costs so much energy from those who care about topics like this.
I'm not going to "debate you bro". Build your own opinion, read the articles I linked, try to find an argument.
Try to find good faith. Then maybe there can be a conversation.
What OP described is exactly how TERFs phrase their fight against trans people in public. I'm not going to engage with those arguments, because they either come from ignorance (which I'm not energetic enough to combat today) or from a place of bad faith "discussions".
It seems to be both conscious and coordinate and does fit into the overall climate of the UK in general being quite openly transphobic (yes, that's a generalization, I know).
Just look at some of the crap that J. K. Rowling sprouts which doesn't seem to reduce her darling status.
Given it's position as a mostly progressive/liberal paper their line on transgender topics is weirdly backwards. And it's not just commenters. It does match the overall atmosphere in the UK in general, but it's extremely jarring when looking at it from the outside.