I mean, different regions have different plants which they call “grass”, not to mention different climates. It is genuinely possible that even grass in the wild goes brown in that region…

The best cut changes seasonally

• cut medium in the spring to better control it in fast growth
• cut long in the summer to hold more moisture and choke out weeds, to better handle dry season
• cut short in fall, to help it green up faster in the Spring, reduce thatch, and make it easier to keep clean of debris over winter

Once grass is hibernating, it’s not like cutting it short inhibits anything: that part of the grass isn’t coming back to life