Yeah, this is one of those context things I mentioned.
In general it's easier to break stuff than to build it. Building competent OL's - with their intricate internal teamwork and timing, within a wider of context of working within the rhythm of an offense - takes more time than to organise a set of destroyers to wreak havoc. This is more so in this age where there is less padded/ hitting practices running up to the season. So I would expect around the middle third of the season the OL's and offenses will begin to improve a bit vs defenses which are more ready early.