I think what he is doing is using the word origin of 'God' as 'that which is invoked'
No, but that is an interesting interjection.
If you wish to invoke or have more of 'love', 'good fortune', 'power' then you create a god of love or luck or power. There can be many Gods. When there is one God it usually possesses multiple attributes. I believe in Islam, Allah is said to have a hundred names. These names are attributes rather than different gods.
I'm trying to explain the concept of god, deity. Translations such as Sanskrit, Proto-Germanic, Latin etc. may incorporate descriptive applications without explaining what the thing is. All examples of any god in any language incorporates the simple attribution of might and/or veneration. So in linguistic variations you might have to ask, why is the word God from pour, or invoke, or gleam, shining, or voice, etc. It all comes back to might / veneration.
The Japanese word kami, plural kami, is an object of worship in Shintō and other indigenous religions of Japan. The term kami is often translated as “god,” “lord,” or “deity,” but it also includes other forces of nature, both good and evil, which, because of their superiority or divinity, become objects of reverence and respect.
The word is, in my opinion, more accurately translated as spirit. The spirit's of ones dead ancestors inhabit object like mirrors, swords, mountains etc.