You’re showing way too much faith in the institutions that invented the red lining in the first place to imply that the ol’ boys club system wasn’t waaaaay more rife with systemic racism.
The post war recovery laws were literally lobbied to specifically exclude black folks, but sure, home buying was easier for them then than it was post credit scores.
My dude, you’re missing about thirty years of history.
Redlining was made illegal by the Fair Housing Act in the late 60’s. It may have still existed in some fucked up form but it was no longer the standard by which lending was done. There’s a reason the rate of home ownership among Black people has steadily risen ever since, and yet it still isn’t close to any other group of people.
The whole system is fucked and it’s largely set up to fuck Black people because some mayo motherfuckers still want to own humans.
It might have been “illegal” but lenders were still basically doing it anyways, just calling it everything else imaginable. Shit they still do it when they think they’ll get away with it, folks have actually tested it, real estate brokers list houses shown by white “owners” at higher values than those shown by black “owners”