Did you not see where I already said that scripts are not meant to be seen by the audience, so their use of capitalization is meaningless? Scriptwriters often have little or no experience with prose writing, and nobody's expected to see their text except the cast, crew, and executives, so their use of spelling, punctuation, and style is often far looser than anything you'd see in a professionally copyedited prose work. A script is not a final work, but just a set of instructions for creating the actual work. So it's allowed to be rough.
Exclusively except in TNG's first season. We all know that. That's the entire point of this conversation -- to speculate about possible explanations for that anomaly.
