It’s all fun, Arsenal just don’t have a proper top class forward, and they do seem a bit shot shy as well from the others in the team. Add that to the problem they have at left back, where they’re either trying to get a player who isn’t that defensive minded (Zinchenko) or a right back with no real left foot (Tomiyasu), they’ll get hunted down that side by the big teams.
The leagues there for a few teams, Man City are prone to lapses as well, they just have such a formidable set up, that three or four centre backs in defence is starting to look pretty good these days, but then again those centre backs are good with the ball, so can cover defensive midfield as well.