More or less.
We're not 100% sure what you mean.
For clarity, it is this particular quote that confuses me:
"[...] unless this is a community resource [...], please don't use something you already made just for yourself."
What I understand from it is: "Do not use something you made yourself if it is not available publicly." I just want to make sure if it is mandatory or not to share self-created assets for the game jam project.