A good example of what I'm taking about is the steady state vs. expanding universe rivalry that was raging until the mid-1960s.Scientists disagreeing is normal and par for the course. Collusion to marginalize and even destroy the careers of those who disagree is not.
Are you kidding me? Collusion to marginalize other scientists isn't normal?
I'm not saying whether that is the case here or not. However, that is more normal in the scientific community than you think and has been for centuries.
Even though the rivalry between the camps was fierce, there isn't any evidence that one side or the other set about to personally destroy the careers of members of the opposing side. Real scientists interested in finding the truth, rather than protecting their cushy research grants, are adult enough to let the facts of science speak for themselves.