The seats are assigned. People have been standing in line for 15 minutes now. Why on earth would anyone want to stand there, when they could just sit and wait until the line clears?
I understand wanting to get off a plane ASAP, but boarding? You just end up sitting on the plane, waiting for everyone else to get on.
It’s depending whether you need check bags. As soon as you need check bags, suddently, main airlines becomes competitive with cheap ones like Ryanair, especially considering the airport they desserve which tend to be better located (The difference between a Metro ticket for the main one, and a 20 € Shuttle bus to a remote one also impacts the total price