Why? Why is everybody renaming their project after years of building up reputation?

I like Proxmox for it’s first-class treatment of ZFS. You can easily run Docker/Podman on top of it or in a VM. Proxmox has some other advantages like replication and clustering, but I’d say you don’t need that in a home setup (at least I don’t).

If I had to redo my setup today, I’d probably give TrueNAS SCALE a chance though.

I can’t tell whether you’re kidding or not.
In Germany you absolutely get subpoenaed for the slightest copyright infringement. There a law firm called “Waldorf Frommer” that does all the dirty work for the so called rights holders.