It’s all very interesting because Dr Seuss is pretty complex. I do think the images in those books are racial stereotypes and the books should not continue to be published. I suspect Dr Seuss was unconscious of his bias at that time which doesn’t excuse it.
However, prior to and during World War 2, he was virulently against the America First policy of tolerating the rise of Nazism and drew many political cartoons against it. This is one of the most famous:
https://cdn.theatlantic.com/assets/media/img/posts/2017/01/seuss/d63122875.jpg
He also wrote “The Lorax” which is a pro-environmental story. and The Sneetches which satirizes the dangers of bigotry.
It seems likely to me, that like many others, he evolved as he aged and became less prejudiced.
So, abandoning the works that have racist depictions while not condemning the entire oeuvre seems like a reasonable course.