It’s been a while since I looked at benchmarks (https://www.phoronix.com/news/Linux-5.14-File-Systems). It could be these days.

To be honest, I don’t see a benefit for btrfs (or zfs). I prefer plain ext4 (no LVM). It’s simpler and faster. I have no need for snapshots. Proxmox handles my vms and my working machines are just a collection of dot files… But that’s just me. It’s good that there are choices.