Your reference to statehood as “a power grab that caters to the overwhelming welfare/food-stamp dependent class in order to stack congress in favor of Dems.” is what led me to imagine you referred to DC’s black population. In DC, the “welfare/food-stamp dependent class” is overwhelmingly black. However, as the most recent DC Constitution vote of 70+% was taken when the population has become 1/2 white, then the statehood support is more than just black or poor.
As to retrocession to MD, this has been floated by some politicians in both MD and DC. My read on outcome once the public reacted is “it ain’t gonna happen.”