Only the G-Man (and arguably Breen) understood what was about to happen.

I agree that G-Man knew what was going to happen, but I don’t agree that all the scientists were naive. At least a couple of them knew the risks.

I’m pretty sure there is a sound file where a scientist says something like:

“If it goes wrong then this could happen. … But it’s highly unlikely.”

it wasn’t by other scientists trying to place blame on him,

Totally. I don’t think any of the other scientists were malicious.