The enclave is just superior plain and simple. Sacrifices must be made to rebuild "the greatest country in the world" to its former glory.
Here we go again. The pieces have been set back up again:
Have you ever watched the introduction to Fallout 2?
Have you ever seen what the Enclave does?
Have you ever heard of their plot in Fallout 2 and 3?
How can you ignore the evidence placed in front of you?
The Enclave are and have always been evil, even in Fallout 2. They treat everyone who is not one of them like dirt and want to eradicate them, as they are not "pure". Liking the antagonist is not a bad thing, but reversing their role to a heroic protagonist is ridiculous. They ARE evil, or at the very least, chaotically neutral. There is no way these elitists are good, or anywhere close. They are on the evil side, even if you try to pass them off as neutral. I see some people saying that Fallout 3 isn't canon, yet they use "evidence" from the game to try and prove their point. One, Fallout 3 is canon. Two, they are evil in both Fallout 2 and 3. Terrorists believe what they are doing is right, but do you consider them good? Can you even say they are anything less than evil? How are the Enclave different? They are elitist snobs who kill anything that isn't "pure", and still treat the "pure" ones, like vault-dwellers, like dirt. They are bad news and what Bethesda AND Black Isle Studios says is true, is true. They are evil.
Richardson's Enclave was just as bad. Their philosophy is exactly what Eden's is.
Also, Autumn still shoots innocents and still considers anyone who is "impure", dirt. He would never treat a wastelander as his equal, not even close. Eden's Enclave and Richardson's Enclave ARE the Enclave. Autumn doesn't lead the Enclave. He is one person with perhaps only a few soldiers following him. We only know that Autumn doesn't like the FEV idea, but only Autumn. Both known leaders of the Enclave supported use of the modified FEV and so most of the Enclave would have as well. The true Enclave has made that their goal. Fallout 2's Enclave was attempting the exact, same thing. Autumn is still part of the Enclave and still follows their philosophy, but only he has been confirmed of disagreeing with this one thing, and of course there will be some who disagree, but Autumn and a couple of his soldiers do not represent the Enclave. He didn't even appear in Fallout 2. Face it, the actual Enclave supports the eradication of the "impure".
I have no clue, but it doesn't matter. The Enclave don't work like the game's karma system. They can't erase their habit and record of GENOCIDE by "giving caps to the beggars", as a metaphor. Their actions are completely unacceptable. There is no way they are good. It's impossible for mass murderers to be considered good, especially when they still practice genocide.
The modified FEV would kill most of the wasteland, not just ghouls or super mutants. Ghoulification is not a disease. It also is not contagious. The Enclave themselves were going to kill much of the U.S. remaining human population. Once again, I also would like to refer to Fallout 2's introduction. Explain that and other human casualties caused by the Enclave. By what you have told me, I am guessing that Richardson is a good speaker as he seems to have convinced you that the Enclave are harmless.
The modified FEV Richardson wanted to use would kill off almost all wastelanders because almost all of them have a small mutation. This strain of FEV was almost identical to Eden's, which would have had nearly identical effects.
Checkmate.