That's the reason many, but not all, of the media of the 1940s supported it.
Their support for intervention in WW-II prior to Dec 7 was in the negative, *until* Adolf broke his treaty with Uncle Joe and attacked Mother Russian. Then they were all for intervention, Lend Lease and so forth.
Sorry. I did not read your post earlier. It’s brilliant, it’s spot on, You have nailed it, and .... I could not have said it better myself.