"Gotta get it done now now now!" These fools are just like tract house builders.
Some looney toon flipped a house in the next section over, claimed "All new electrical wiring throughout!" Me and my folks went to the open house, and I peeked in the attic. What did I see? A lot of 1950s NM headed towards the back bedroom closet (where the panel is in some of the Levittowners.) All the receptacles were three-prong, and passed the three-light test, as the guy had those testers plugged in a few places.
The house never sold, looked like crap anyways, and now his bank owns it.