Occam's razor is a weak argument to discount something like this, and really doesn't even apply. From Wikipedia (Bold is mine)-

In science, Occam's razor is used as a heuristic technique (discovery tool) to guide scientists in the development of theoretical models, rather than as an arbiter between published models.[1][2] In the scientific method, Occam's razor is not considered an irrefutable principle of logic or a scientific result; the preference for simplicity in the scientific method is based on the falsifiability criterion. For each accepted explanation of a phenomenon, there may be an extremely large, perhaps even incomprehensible, number of possible and more complex alternatives, because one can always burden failing explanations with ad hoc hypotheses to prevent them from being falsified; therefore, simpler theories are preferable to more complex ones because they are more testable.[3][4][5]

We're not talking about a teapot floating in space, we're talking about an online interaction between people. Both cases are equally testable (through chat logs or other evidence). Therefore, you can't just throw out one scenario because it has more steps.