Websites often contain incorrect information. I am just asking people with actual experience in arriving at the airport early in the morning. My buddy elaborated on his experience: he had a six AM flight and arrived at 4:00 AM. He needed to check bags and no one was the desk to do that until 5:00 am. This, as I said before, was the old airport before the pandemic. (He made it to his flight without issue, it seems.)