Based on this paper. There seems to be merit to the argument.
Essentially these researchers claim that they modeled the corona virus surface proteins and found that they will bind to hemoglobin and cause it to release the iron atom - making it non-functional. This leads to the other symptoms of COVID-19. Given the severity of the outbreak it is certainly a hypothesis that others should test to validate or discredit. But based on scientific analysis, not just twitter snarking.
