Laird Wilcox identifies 21 alleged traits of a "political extremist", ranging from behaviour like "a tendency to character assassination", over hateful behaviour like "name calling and labelling", to general character traits like "a tendency to view opponents and critics as essentially evil", "a tendency to substitute intimidation for argument" or "groupthink".
This architectural blandness is a mirror of the groupthink that initially leads Wesley's classmates to bully him for being unusual, but it's perpetrated by home-owning adults instead, who are unable or afraid to think outside the box.