I tried it but it’s pretty complex compared to tubesync and uses weird af filenames, unusable for media servers

I use tubesync, works great

AV1 (NVEnc) + Opus in webm containers

Tandoor

I also use Proxmox Backup Server to backup my VMs. These and the files of my NAS get copied on one of two 22TB HDDs, which I swap out weekly from my fireproof safe. My PC files get synced on my NAS through GoodSync and my Smartphone NeoBackups via Syncthing. My PC also does a Disk2VHD image every month and TrueNAS keeps daily snapshots for two months.

I lost 2TB of data about 15 years ago, I vowed to never let this happen again

I hope you are doing 3-2-1 backups now

No

I have two docker hosts which both run Pihole and get synced via gravity. I set those instances as first and second DNS servers in DHCP and on each docker host