I have many reasons but they're likely not valuable to state here on the forum.
The one big difference between a BSD and a Linux kernel based OS I have seen is the vastly superior hardware support that Linux offers users.
The move isn't much of a change honestly. I was running gnome Wayland on Fedora 37 with LVM BTRFS with two sold state drives. And now I have Z file system with raid and gnome Wayland. There are a few tools that are not available due system differences but there are few of them. The wifi tools differ as well as file system tools and I believe OpenBSD offers no support for Bluetooth. Those are some very big differences.
I will say that some reasons are technical and implementation methods. Some of the main reasons though are not technical in nature. They're more economic reasons and project direction as well as outside influence in the technology.
Considering that I am a supporter of GNU and free software I don't believe that BSD is any more of an issue than mainline Linux in regard to freedom respecting software.
But if for no other reason I am enjoying using FreeBSD and finding it challenging in some ways which has made computing a bit more exciting. It's akin to Linux back in the early 2000s in some ways and I am really enjoying it so far.