But his home game was not run RAW. There are
many posts by Gary here in ENworld and elsewhere, as well as stories shared by those who played in his games, that he ignored many rules, made things up on the spot, and otherwise did not run his home games following all the rules in AD&D.
My eyes are, however, sore from rolling over his comments on angels. He didn't have any problems publishing
Deities & Demigods, which stated up gods that people in current real-world religions worshipped. I don't know the date he wrote his answer to the quote in screen-cap above. I know TSR later changed the name of Deities and Demigods to Legends and Lore to avoid upsetting religious people.
Then again, he's distanced himself from that book, emphasizing that he didn't write it and didn't use it in his games (
TSR - Q&A with Gary Gygax). Seems like a bit like throwing Kuntz and Ward under the bus. And he was still running the show at the time. Who cares if he didn't write it. He greenlit it.