William Stanley Beveridge (July 1, 1909 - February 13, 1995) was a professional ice hockey goaltender who played 9 seasons in the National Hockey League for the Detroit Cougars, Ottawa Senators, St. Louis Eagles, Montreal Maroons and New York Rangers.
William Stanley Beveridge started playing hockey in 1920.
It's neither definitely correct nor definitely incorrect because it's never mentioned when he started playing hockey. I guess the system was confused by the only dates mentioned in the text and assumed they were related to the statement.