Why is light switch wiring a bad idea?

The following article was originally published on February 17, 2018.

The following is a news release from Rocket League, Inc. The information contained herein is for educational purposes only and does not constitute a solicitation to purchase, or sale of any merchandise or services from RocketLeague, Inc., or any affiliate, partner, employee, or agent thereof.

RocketLeague is a trademark of Rocket League.

The following is an unedited copy of the RocketLeague Switch wiring diagram from the Rocket League Switch release.