Whilst all of these things about the entrance security being removed (comment date in June 2019) and everything being a breeze even at 06:00, I honestly couldn't have had the complete opposite. I arrived at 5.45 for the BA flight at 8am on 21st July 2019. The entrance security was still very much in operation (as well as the many other unnecessary security checks after that), the queue was horrendous, filled with people happily pushing in front of you but creating a fuss if you do the same, rude people in general, and I managed to board literally as one of the last passengers at 7.45am. Never again! Honestly, it made a lot of airports that I previously thought were bad, actually seem quite good! But with the entrance security apparently definitely gone, I presume things have genuinely improved as this was the worst bit of it.