Need to Move on From Akers, why is he getting chances?

Kyren Williams is a better option at this point and quite frankly so was Henderson. I don't get the Akers thing, Williams is averaging more yards per carry and is very good in pass protection. Also why is Brown in the game during crunch time and now Williams? The only thing I can think of is they fear getting Williams hurt, but let the kid play and keep Cam on the sidelines and then let him play somewhere else next season.