To be fair the nuclear holocaust in the game was done by corporations. None of the factions are "Good", ncr is just a bad and corrupt, BOS is essentially the light version of the enclave. The legion is just another faction. They all suck and try to control people

Now we call slavery "minimum wage jobs".

Heres how i look at ranking evil or corruption.

I make you two pies. One has a a half teaspoon of diahrrea brushed over the crust. The other has two heaping table spoons stirred into the mix. Which one do you eat?

Ahhh... neither you say? Well one has less! Point is they are both unacceptable. Ranking them is pointless as they both belong in the trash.

The ncr is corrupt and imposes crazy high taxes and tariffs to its the citizens. When half your work goes to people who force you to give it to them, they're part time slavers, only they aren't on the hook for feeding clothing equipping you providing medical care and shelter... cause you're "free". The remainder of what is left of your half goes to that. But you have the illusion of free choice and self determination.

Why try to rank evil and corruption? Why stand for it at all? The only faction i remotely like is the followers of the apocolypse.