If J.K. Rowling has been cancelled, then how come I keep hearing about her? (And from her.) She's one of the least cancelled people I can think of, precisely because she has access to a huge megaphone. She's especially privileged, in that context, because she gets to talk despite the fact that she's extremely ignorant about the subject she wants to talk about.
I mean, look. I grew up on Astérix and Tintin, and I absolutely love them, and look forward to introducing my hatchling to them when the time comes. But there's no question that there's a hefty dose of racism in there (I think it's worse in Tintin, actually, because Astérix is about national stereotypes, although I have to say that the people who've continued the series after Uderzo and Goscinny just don't get that, and have introduced some staggeringly racist material.). When we get there, we're going to have some conversations about it. Ditto Harry Potter.
But the hatchling will be allowed to read them and enjoy them. Just like we can read and enjoy things produced by bad people, or for dubious ends. It's just that we shouldn't stop up our ears and ignore these artists' moral failings. Sometimes (but not always), those moral failings are reflected in their works, or cause you to reinterpret those works. That's OK. That's why I don't read Stephen King any more: I don't trust him, and the fact that he doesn't have my trust (qua author or implied narrator) undermines my ability to enjoy his works as an adult, because those works so often deal with the very subjects on which I don't trust him.
The Geisel estate's decision is no big deal, and it's one they're totally free to make. They get to decide what they want his legacy to look like, and what they want to be associated with. Publishers make these decisions all the time. This isn't a 'cancellation'. And it seems to me that everyone who's in such a rush to stockpile these titles should reflect on their motives for doing so. I was never into Dr. Seuss, so I don't really need to do any rethinking, just like I never liked Woody Allen's movies, so I don't need to think about my relation to those, either. I have other, better things to think about, things dearer to my heart, like Astérix and Tintin.