4GB RAM in a new Mac is a non-starter. MacOS can’t function properly with so little RAM.Mac Mini can drop in price or offer superior specs to a Macbook SE. IE, for $700, a Mac Mini might come with twice the RAM and twice the storage of a Macbook SE.
Remember, we're talking about 2022, 2 years from now. I fully expect the Mini to increase its base specs by then.
In addition, you can possibly think of a Macbook SE as a $330 iPad with a keyboard, bigger screen, and a better SoC.
I really don’t see them increasing the base to 16GB in the next 2 years either, though it would be nice.