Yeah this is super weird to me, because the processes at Google for employees to release and attribute ownership of open source projects are extremely clear and well established. It's genuinely hard for me to imagine this happening in a way that confused or caught the author off guard.

It's totally fair to question the wisdom of those processes and policies!

But I'm pretty skeptical of the "I'm surprised I got in trouble for this" narrative.

Clueness sometimes goes hand-in-hand with perceived freedom. I think it's that cause and effect are not as often connected (consequences). I remember a Google employee updating a Google font that broke thousands of websites. Community members explained that Google recommended (at that time) letting Google host the font, and that they could fork it instead, or find a path that wouldn't break so many websites. The employee took the implication of consequences as being connected to ther actions as an aff(r)ont "They can just host it themselves"; "they can switch to another font/redesgin their site". When it was pointed out that the cause would not be known to most, and that budgets would have to be found to ferret out the cause and implement the solution, etc., etc., the Google employee stopped responding.