And both of those have very minimal ports compared to Linux. Notably in modern arm/riscv. Netbsd has really fallen behind.

Still better than the none of freebsd.

I mean, are we surprised? Linux has on the order of millions times more users and funds (probably not developers though, but who knows). Thus, if there is any financial viability of a port I am certainly expecting Linux to "move" first. Rather, I am impressed that OpenBSD and NetBSD are keeping up as well as they do.

NetBSD and OpenBSD support “old” hardware notably longer than Linux does though. OpenBSD having dropped the VAX is not that long ago.

Yeah I suppose.

But OpenBSD forked from NetBSD like, what, 30 years ago?