I think its actually straight forward. BK and CL want to limit BW getting hit. They know they do not have the OL that they had last year to essentially push their way into the endzone. They need a legitimate threat throwing PA fakes while keeping the formations from being a tell.
Not saying I agree with any of that, but I think it shows their lack of faith in the overall offense this year. In reality it is holding the team back from establishing an identity,
Maybe....but BK and Lea don't mind running Tranquill and Coney out 90 times a game