Dear Michael,
Thank you for checking.
Are you asking a question or making a statement?
You cannot be wrong, ever, as long as you are asking a question.
Assuming that to be the case, I checked the status of the wish list item CF-1209 [retrieve relationship between Line Style and Line Pattern -- 09521521].
That is apparently implemented by the change request REVIT-37842 [As a Add-In Developer, I would like to change the Line Pattern for a Category, so that I can modify a project's Object Styles in my application].
This in turn is marked as a duplicate of REVIT-72456 [As an API developer, I need to set the Line Pattern (in Object Styles and Line Styles) through the API so that its easy to create and configure files without having to start a template file], which has been submitted to the upcoming next major release of Revit.
You should therefore be able to download the most recent preview release from the Autodesk beta site and try it out yourself right away.
Please let us know how you fare.
If you encounter any issues with the fix, please urgently discuss them directly with the development team in the beta site discussion forum.
Thank you!
I hope this helps.
Best regards,
Jeremy