That number would inevitably lead to tons of videos with piles of corpses and cities covered with dead.
Like ones that appear when west-backed Julani killed Alawites.
But there is almost no such content - only rumors, unnamed sources and documents no one bother to check.
Mostly because that's useless. Ukrainian weapon production and economy is located in Europe. Ukraine is basicaly western PMC now.
If nuclear war starts, nukes would be falling on European cities and facilities, not Ukrainian.