You guys need to remember that ground fighting and ground grappling are not the same thing.
Technically speaking, ground fighting should INCOMPASS all, striking, grappling, weapons, while on the ground.
Fact is, not CMA covers ground grappling to the extend of Judo, much less BJJ or submission grappling.
And in terms of total ground fighting, those syetms that do train it are still, probably, far behind the curve compared to modern MMA and Vale Tudo oriented systems.
The issue being the use of weapons while downed that seems to be, currently, only addressed in a full contact environemnt by the Dog Brothers.