That's like arguing that the founding fathers never intended for the first amendment to protect what you write down in a notebook because it says "freedom of the press," not "freedom of the notepad" (which is an inferior means of putting your speech to paper for publication).
Bad metaphor. I think the founders meant to cover freedom to write whatever in your notebooks in Article IV, "secure in their persons, houses, papers, and effects, against unreasonable searches and seizures...". The freedom of the press means that the government shall not censor published works. Your private notebook isn't published (or else it wouldn't be private). The freedom of speech is the freedom to communicate.
In fact, the Founders thought that the constitution, with its limited government, was so protecting of the rights of the people in the first place, that they Bill of Rights was an afterthought, brought in as amendments to the original document, when the public to whom they were trying to sell the constitution to rightly recognized there weren't strong enough protections for individual rights in the constitution. They never intended to have the amendments in the first place! They only wrote them after the people demanded it, and wouldn't accept a constitution without explicit guarantees of freedom.