The central problem of Objectivism is that they tie their logical conclusions into emotional knots. You can see this in their use of loaded language such as "theft".
The problem is that this causes them to believe that their conclusions are purely logical, even when they are not. Therefore any disagreements are "proof" that the other is being illogical and should be rejected. This leads to an intolerance of disagreement, that in turn leads to the excommunication, loyalty tests, and so on. All of which will be expressed in the rhetoric of the philosophy, which is designed to appeal to reason while connecting to emotion.
It is perfectly predictable emotional behavior. As is the inability to process inconvenient information that does not align with what the philosophy wishes to believe is true.
The problem is that this causes them to believe that their conclusions are purely logical, even when they are not. Therefore any disagreements are "proof" that the other is being illogical and should be rejected. This leads to an intolerance of disagreement, that in turn leads to the excommunication, loyalty tests, and so on. All of which will be expressed in the rhetoric of the philosophy, which is designed to appeal to reason while connecting to emotion.
It is perfectly predictable emotional behavior. As is the inability to process inconvenient information that does not align with what the philosophy wishes to believe is true.