I've tried to rationalise the possible reasons for this but I've never understood it.
Can the mod team or any one else she'd some light on this? I'm happy to be proved wrong but it doesn't make sense to me.
It flies counter to giving a justified reason every time you neg a deal.
If it makes it any better, it's all worthless internet points…not even remotely useful/ holding value like getting tipped in Moons or Doge on Reddit…
fwiw this has been covered many times, the one response i could easily find is from mod @neil here
Short of it is visible negs promote in-fighting within the community.