Everyone is mis-understanding the leveling scaling bullet point.
What Todd is saying is that there will be leveled areas in the game world - i.e. some areas will have enemies Levels 5-10, others will have Level 30 enemies, etc. This is the exact same thing they did in FO3 and Skyrim. What happened though, was that once you entered an area, it became "locked". So the enemies that spawned in it would always be Level 10 at most (using the first area example).
The rubberbanding Todd is talking about is that in FO4, when you first encounter an area, it might be full of Level 5-10 enemies, but when you come back later in the game, it might have Level 30 enemies. So unlike Skyrim and FO3, you can't ever take for granted that the enemies you are encountering are weak.
That's my interpretation. Otherwise Todd is literally bragging about a feature that has been present for two games already.