Sleep regulates the production of leptin and ghrelin, two hormones that regulate appetite, and the subsequent processing of calories consumed.
Someone who sleeps well and someone who sleeps badly will have different weight gain even if they eat and exercise exactly the same.
But on topic, tone policing is a bit of a bore. It only encourages rampant dishonesty about what people do, are capable of, and what effort it takes to achieve anything.
Speaking as a pregnant woman who has languished a bit with sickness but feels much better for having done an average of 8m hiking every day for the past week, I want to do more, not less.