It's basically a trade off.
If the standing fighter wants the grounded fighter back to his feet, but the grounded fighter doesn't want to stand back up, then the ref has to get involved.
Without the ref, there's nothing to force the grounded fighter to his feet, which could result in a stalemate.
Personally, I prefer the refs are involved as little as possible. But if you want the other guy to get up, and you need the ref to make him, then you have to be ok with the ref allowing him a safe period to get to his feet.