Hey Greymark, thanks for the question. I’m very much a ‘hobby designer’ and create and release content for free and have no objection if people want to create content for the system (that would be cool). I released the core rule books under a Creative Commons licence to allow people to hack/tweak/amend and release their own content based on the rule-set if they wish without restriction (aside from an acknowledgement).
With regard to the adventures, this to me felt like just usable content where there would be little appetite to hack, tweak or amend this so I didn’t bother adding the licence.
We recently ran a game jam and I created some logos for people to use if they wished (it was optional). There’s no licence restriction on my part for third party material it was more about people having a logo to associate their creations with the system.
In short, if someone had some interest in creating something for the system then go for it, I’m cool with it.
I hope this answers your questions.