Though it's unclear whether or not Albert realizes that he's actually standing up for Suki (or if he just wants to share what he knows), pointing out that lobster used to be a meal reserved for the poor illustrates how the environment that Mr. Daniels is creating makes it acceptable and encouraged to stand up for others like this. By allowing Albert to make this statement, Mr. Daniels can again show Albert that he values his opinions, while also allow his students to do some of the work of policing each other's tone and intent.