The Gunners needed a 96th minute equaliser from Alexandre Lacazette to rescue a point against the Saints as they took their winless run to six games, in a game they were fortunate to come away with a point from.
Southampton had 21 shots during the contest in north London and the home side were booed off by their own fans at full time.
“Where do we start? They were sloppy, so bad defensively. [Kieran] Tierney set the tone after a couple of minutes, caught on the ball, poor touches,” Shearer said on Match of the Day.
“[Lucas] Torreira then got caught on the ball, Arsenal got away with it. Six players and the manager are moaning to the referee when Southampton score, they were too clever for them.
“David Luiz… by the time the ball is in the net he’s not even in the box, it’s too late, he’s switching off.
“These mistakes are happening every single week trying to play out of the back but they’re not good enough to play out from the back, they keep giving chances away.
“I might get criticised for talking about fouling but what does [N’golo] Kante, Fabinho and Fernandinho do? They foul and they stop attacks.
“It’s a lack of experience from [Matteo Guendouzi] because look at the space Southampton have got to run into.”