If you don't like the new version of the license, you can start releasing your newer code under v3-only. This doesn't stop someone from forking the old version

If you don't like the new version of the license, you can start releasing your newer code under v3-only. This doesn't stop someone from forking the old version and releasing it under v4, but for the vast majority of projects this isn't an issue; most are small enough that it's uncommon for forks to overtake the original while the latter is still in development.