Did you read the article? It specifically cited a costly NASA error due to mixing measurement systems: The use of two different systems was the root cause

Did you read the article? It specifically cited a costly NASA error due to mixing measurement systems: The use of two different systems was the root cause in the loss of the $125 million Mars Climate Orbiter. NASA specified metric units in the contract. NASA and other organizations worked in metric units, but one subcontractor, Lockheed Martin, provided thruster performance data to the team in pound force seconds instead of newton seconds. The spacecraft was intended to orbit Mars at about 150 kilometers altitude, but the incorrect data meant that it probably descended instead to about 57 kilometers, burning up in the thin Martian atmosphere.