The fact that there's a freeze to allow for shaking out troublesome issues in a few packages (and possibly discover ones you didn't already find in older ones) without much risk of others newly breaking is a feature, not a bug.

Debian testing/unstable, backports and third-party repos exist if people really want the latest anyone's packaged, or the latest version of one specific thing on their otherwise stable system.

You may disagree with the philosophy, but every part of that behavior is working as intended.