That only applies to those making comments on or before the case itself.

After Kyle was found not guilty on all charges, it changes.

There were still, and are still, outlets and individuals that have defamed Kyle after the verdict. He can certainly sue them for damages.

The issue is that the companies will argue that Kyle's reputation was already shit so it doesn't matter. There was another recent case like this between media orgs... Daily Caller maybe? Had a bunch of ridiculous court shenanigans as well.