Guilt by association is a poor substitute for an argument. The partisan takes on this site have eclipsed actual discussion. Mearshiemer has also appeared with a variety of think tanks, because he is widely respected. It is easy to cherry pick one. It should be obvious how this line of reasoning is flawed, especially in the context of non-prescriptive realism.
Let's go back to the poster's super weird assertion. By definition, a provocation is something which results in a response. Observing that it is a provocation isn't the same as endorsing the response. Knee jerk categorization doesn't remove this discernment. Instead it misleads by glossing over the details. I would regard that to be a byproduct of propaganda.