I mean, you had to specify "which is a community mod". Without that information, it would be reasonable to assume it was made by Valve. No?

I did edit my comment saying it was likely not intentional. But in the case that it was intentionally using the word 'official' to mislead people to even just click on the video, is still misleading and manipulating people into doing something they may not have done otherwise.

But yeah, it's most likely that the dev did not realize the implications of using that word.

I am curious why you think the example is too different. Because it outlines the exact same scenario besides selling the product. A company owns an IP. A person uses that IP to create a product. That product is then labeled 'official' though the owner of the IP had not authorized the use of their IP.