I was at the check in 1:20 before ETD.
That's a mistake for a start. Check in times are based on SCHEDULED time of departure, not estimated, so if you were aware of a delay and you chose to get to the airport late based on that assumption, you were in the wrong.
Easy jet are not a low cost airline they are a low service quality airline. Or in my case a no service airline.
Given what happened to you, I can understand your anger. I disagree with your opinion.
I don't except that overbooking is acceptable with a loco as if you miss the flight you don't get your money back or transferred free of charge to another flight.
That is not necessarily true either.