the more i watch film the more I see Frederick getting pushed into the backfield which is disrupting these runs
That has happened, but not on the play being discussed here and shown in the Gif. He is making a reach block which requires the OL to take a step or two back as they're moving laterally because they are trying to get around to the front side of the defender (i.e. Fred wants to be between the defender and the right sideline). The problem is that when the play is called, the offense does not know exactly where the defenders will line up. On this play the defender lined up to far too the (offensive) right for Fred to complete the reach block. That is why the RB is required to "read" that block and cut back when the reach block is not working.
What I would like to see on a play like this is for Fred to determine that the reach is not possible and then to just go ahead and block the defender towards the right sideline instead of trying to prevent the defender from going towards the right sideline. The reason he does not do that is because he's trying to give the RB the option. It is up to the coaches to make that change, not Fred.
On some plays where Fred does get pushed into the backfield this season, I think it is sometimes because he is not getting an initial help block from the Guards that most Centers get. I think the coaches might have looked at his success last season and decided he does not need help; however, I think they might need to reconsider that idea, especially against specific teams with powerful Nose Tackles.