I have installed Fedora Workstation a few times new since Fedora 33 came out.
It defaults to using BTRFS.
But I just installed Fedora 33 Server Minimal from the Netinstall ISO (Fedora-Server-netinst-x86_64-33-1.2.iso
) for the first time. and it defaulted to using LVM still.
For my usage of the systems, I do not care which filesystem is in use. I was just surprised to see it different between the two.