The answer is most likely yes. McMansion is a slang term for a large newly built house that is poorly designed and too big for its surroundings. These houses were first constructed in the 1990's in America. They are compared to McDonald's for being built so fast. These types of houses were massively constructed in the early 2000's, with around 50% vacancy in most cases. After the market collapsed in 2008 the construction of these houses diminished. People are starting to live in smaller homes on average, because of the mortgage crisis. McMansions attempt to replicate historic architecture but end up just retracting from the existing historical architecture. If you are going to build your own house, take into consideration of quality not quantity! There is nothing wrong with building big when its done right.
For a little historical context, 1,200 square feet was the average home size in America in the 1960s. That grew to 1,710 square feet in the 1980s and 2,330 square feet in the 2000s.
What sets a McMansion apart from a regular mansion, according to Wikipedia, are a few characteristics: They’re tacky, they lack a definitive style and they have a “displeasingly jumbled appearance.” (Wiki says the word McMansion first appeared in the SD Union-Tribune in 1990)