Final answer:
The author included statistics on golf activity to demonstrate golf's robust recovery and growth despite the widespread lockdowns caused by the COVID-19 pandemic.
Step-by-step explanation:
The author included the information about golf courses being open and the industry's expectation of increased rounds played to illustrate the strength of golf's recovery since the COVID-19 lockdowns began. This detail highlights that despite the initial impact of the pandemic on the sports industry, golf has shown resilience and has even seen growth in terms of rounds played compared to the previous year. The comparison to the previous year's 441 million rounds serves to quantify the recovery and potentially gauge the increasing popularity or return of golfers to the course amidst the pandemic.