[License-discuss] GPLv3 'permanent' license reinstatement?

[Smith, McCoy]

>>I do not believe the intent in the drafting was to provide a mechanism for a licensee to escape the obligations of the license, but I can't see how 'permanently' could reasonably be interpreted in any other way.

If you want to discern the intent and effect of the language in this license, you probably should contact its stewards, the FSF.  They are fairly active in continuing to promote their license and providing interpretive guidance.