@axbom but can I use your NC work on my blog? I blog for fun, and have no money in the game, so this sounds safe. But I also use my blog to promote myself, and sometimes I might get hired to do something based on the contents of it. Is that "commercial"? I don't know.
Imagine an NGO that got grant money to promote the Fediverse. Can they use your fantastic work (with attribution, of course!)? NC does not make it clear, and if I were running that project, I would probably decide not to risk it.
@rysiek Valid points. My take was always that it's about the artefact itself. So okay to showcase in commercial settings but not to sell on its own as the reason for charging money. But I see where it can make people hesitate. I'll have a think about it.