"This page intentionally left blank" - isn't that demonstrably false?

I get various legal and financial documents with some pages marked “this page intentionally left blank”.

That seems utterly false. As soon as they added those words, the pages was not blank.

Would there be better wording that could be used? Maybe:
“this page should not be considered valid in this document” or “this page contains no actionable content” or something like that?