I think it means it's not a goal for first party as they are focused in supporting third party handheld PC like the deck or Asus ROG.
Not a goal for first party in 2023. It's in the title. Current gaps in FY23...
In fact, using the word gap implies that it's something on the table rather than not...
Not in scope, in the tech world means work that will eventually be done unless canceled, but currently not committed to in the concrete roadmap.