Not explicitly.
Do you want to argue the implication isn't present?
Because, the question about alternate platforms could have been validly asked without any reference to Rowling. The reference, and how the entire thread became much more about Rowling and doing business with her, than platform, sends a message.
And there's no real problem with that. But people will react as if they live in an environment filled with such messages, and nobody should be the least bit surprised when folks get a bit defensive in that context.