Because they were sick of having some aging syphilitic decide the rules on the basis of whether or not his mascara ran. This document survives and guides us today. But hopefully we have learned that documents need to grow just like people. Progress changes how we act and how we think. Inventions beget behaviors.
Discoveries provide opportunities.
And most important right now, technology changes the rules. No law should ever be passed abridging the freedom of speech, or of the press, or of the right of the people peaceably to assemble, or to petition the government for redress of grievances. There wasn't any VH1 when those words were written. We're dealing with it for commerce. We're dealing with it for pornography.