Sadly, the word "ban" has been used all too inapropriatley lately. And this website doesn't seem to help as nowhere did I see exactly what they meant by banned, who banned them, or exactly what the ban entails.
Banning, in this case, means removal from libraries. Sometimes it is by state order, sometimes it is via independent action taken by the school district (although that is usually also in an attempt to adhere with state board of education guidelines).
The linked data source cited for this article provides ban classifications for each and every book they list as banned.
They're not being literal in that comment, they're alluding to the fact that such broad bans, which even DeSantis has called overreach in some cases, are moreso about aligning to an ideological narrative than actually caring about which books are in school libraries. But the books are also being removed, from school libraries and from classroom libraries.
The linked data source cited for this article provides ban classifications for each and every book they list as banned.