By the way the drought has killed all of my own, my lawn is brown too and crackles when I walk on it.
But your lawn is only dormant, When watered it will come back to life..His won’t.
Grass can go a relatively long periods without moisture but it cannot go forever. Whether the lawn is dormant or dead depends on just how long the drought has been in effect and the temperature during the drought.
Grass type also has a bearing on how stressed a lawn will become. Zoysia and Bermuda grass tolerate drought well but even these grasses will die if there is no moisture for 2-3 weeks and temps are past 90 degrees.