Why this? Because starting and stopping a bike is really inefficient and dramatically increases the energy requirements during riding. Moreover, at night, it's not always safest to stop at a deserted intersection. From the FAQ, the law would apply only to stop signs and would
make it legal for bicyclists to treat stop signs like yield signs. A cyclist approaching an intersection controlled by a stop sign, would be permitted to roll through the stop sign after yielding the right of way if there are other vehicles at the intersection.
For more on the BTA legislative agenda see this.