Why is this offense so bad?

[WhodeyRay]

I hear a lot of Burrow bashing and Herbert is great and so on. But be realistic for a minute and watch a Chargers game and a Bengals game. It is more than evident that the Chargers have a great offensive game plan and scheme to move the ball and routes that open up their receivers. We just don't have that period. I think Burrow is playing well in spite of our coaches on offense. The game plan will make or break the qb just look at Tannehill and Darnold. I think Joe is in the exact same situation Tannehill was in at Miami and Darnold was in at NY. Bottom line is we need an OC with proven ability and Taylor is just the HC or move on from Zak and his High School offense all together. He is ruining a good qb and also wasting time while we have a qb on the rookie wage scale.