> gnu.org has a huge beef with BSD, they are actively campaigning for any developer considering BSD to use GPL instead[1]. Basically, anything that is not 100% copyleft is considered non-Free by GNU and FSF.

Not true. Just look here: https://www.gnu.org/licenses/license-list.en.html

Plenty of BSD-ish licenses that are in the free software categories.

The FSF's and GNU proejct's position is that they prefer GPL over BSD, but nowhere do they say BSDish licensed code is not free software.