I was annoyed too when I saw the message, but, if I understood it correctly, it's a matter of widening the scope of the LTS version. The extra packages would only be updated on the next release, or are already updated if you don't use LTS. The message make it seem like they are withholding security patches, but it has always been like that and nobody cared. We just want everything to be updated, even if it'll make no difference.