The reason for the Chabad custom, is that the Shulchan Oruch HaRav/The Alter Rebbe holds that the brochos are on the general hanhogo of Hashem not on this specific day. E.g. Hamaavir sheino, is thanking Hashem that I wake up every day, not specifically today. So even if I haven’t slept, I can still say it.
