I seem to remember this being a horse camground only at one point (years ago), is that still the case or all welcome?

Yes horses still and all are welcome

The camp has 15 sites with corrals, 8 sites for tent/RV camping and we do everything we can to ensure that everyone who comes up to camp will get to comfortably.

You can camp without a horse though. My brother and I just did a couple weeks ago

All are welcome, especially horses lol. First come, first serve.