The fact that the Linux source code license is open doesn’t give permission to another work about Linux.
An analogy would be a park - you can use it, go running, etc with no issues.
But if you setup your easel and make a painting of the park, that painting is an original creative work, and it is protected under copyright laws.
The same for that sticker. Even with the image of Tux being made “free” (attribution) by its creator, this stylized combination of drawing and text is still copyrighted, so we’d have to ask their permission for the stickers.
The fact that the Linux source code license is open doesn’t give permission to another work about Linux.
An analogy would be a park - you can use it, go running, etc with no issues. But if you setup your easel and make a painting of the park, that painting is an original creative work, and it is protected under copyright laws.
The same for that sticker. Even with the image of Tux being made “free” (attribution) by its creator, this stylized combination of drawing and text is still copyrighted, so we’d have to ask their permission for the stickers.
I’m sure whoever created this really cares.
That’s unrelated to OPs point that because Linux is FOSS, so is the drawing. As an advocate for open source, I try to clear up this kind of confusion.
If the creator of this sticker was worried about posting their username, I’m sure they probably would have…