Some other 90’s TV shows and movies:

The Simpsons. Homer owns a 2 story house and supports a family of 5 (at least sometimes 6, with his father Abe) and two pets on a single income as a nuclear safety officer.

Christmas Vacation. Clark Griswold works as a chemical engineer at a food company working on such projects as a coating for cereal to keep it crunchy longer. There’s no indication that his wife works. He supports a family of 4, owns a large house, takes frequent lengthy vacations and has enough disposable income to install an in-ground swimming pool…assuming his typical year-end bonus.

Married…With Children. Al Bundy is a retail shoe salesman, his wife does not work. He owns a 2-story house and supports a family of 4.

A single breadwinner owning a large house and supporting a family with disposable income didn’t used to be hilariously unrealistic.