Going back three years, Arsenal were incredibly naive.
Boubacar Kamara used both hands to lock Aaron Ramsdale during a corner kick, blocking his movement and preventing the goalkeeper from jumping.
No Arsenal player noticed, completely innocently allowing Kamara to keep Ramsdale locked in front of the goal.
As a result, Douglas Luiz's corner kick went straight into the net, even though the ball wasn't in a difficult corner.
VAR reviewed and confirmed the goal.
Today, Arsenal didn't create anything new; perhaps the Premier League taught Arsenal to adapt so they wouldn't become victims of such naivety.