By taking the books out of publication they are making it possible for children to continue reading Seuss books. Seuss as a whole isn't cancelled but the particular offensive titles are being withdrawn. This isn't something new, there have been discussions among teachers and librarians regarding offensive illustrations in Seuss books for at least the last 10 years. For the last 3 years my district has asked us to reduce the emphasis on Seuss during Read Across America week as has the NEA because of the offensive illustrations. Most surrounding districts do the same. As a school librarian, I've taken the offending titles out of my school's collection.
If they did not take the few titles out of publication, they were in danger of having Seuss completely cancelled. What the publisher did was damage control but it may have been too late.
Renaming some of the areas in Seussland would be appropriate imo as several of the areas are named for specific Seuss books that are no longer in publication and are now associated with racist illustrations.
If you look at the titles no longer in publication and you do not see anything offensive, try talking to your friends of color about it, try reading about why the illustrations are offensive. Just chalking it up to cancel culture is a missed opportunity to see how people of color are marginalized and what you can do to prevent it from continuing.