Deliveries of refined gas are at an all time low, which would allow fuel for your argument of 85-90% capacity being OK! People can't afford the fuel so we have cut our usage. Lower the price of fuel and consumption will rise and our economy will recover. Will our current Refinery capacity be able to keep up?
Also, the imports of refined products have dropped to negative number, ie we are a net exporter now.
Also, your chart is only a subset of the gasoline market. Because of the many different "recipes" now required, less finished gasoline is delivered straight from the refinery. Instead they produce gasoline blending products that a blender puts together in a finished product, including adding ethanol.
Our Total production looks like: