I concur with the impact on throws, in matches I actively aim to do this too.
In Olympic wrestling there is a "reckless" rules but you are only required to throw correctly, it is their fault if they cannot land. Olympic wrestling mats however are very soft. American folk style prohibits slams but I do not practice that.
The control aspect is essential for combat outside of judo if the throw does not stun, a roll thru soft throw ends badly IMO.
The other benefits are longevity of yourself and training partner, a greater ability to effect the exact landing of throws, when you increase force your landing is in fact harder due to better body position, it forces correct entry as you can't overplay lack of technique with speed & power etc
This type of wrestling I am used to and in Judo practice I have seen it done but not so much in English speaking countries.
If you are looking for ippon this may be another way to practice "back landing" but for present purposes in the no-gi world this is the way to takedown as you avoid guard.
I'll try and find some Rousey technicals for no-gi to show what she does, these things are practiced at two speeds, this is light practice the other is hard.