Coming to a future 3.5 Blender built in assets.
First ones are available on this web page now if you want them now.
There will also be built in assets of geo nodes to make curve hair and fur set ups.
gone over in this weekly info YouTube by Pablo. From 13:07 SCULPT VECTOR DISPLACEMENT - Blender.Today LIVE #218 - YouTube
Basically, hair modifiers in effect, programmed by others in geo nodes.