You can't really control the damage or millions of people being at risk on a daily basis as it relates to natural disasters like earthquakes or to a lesser extent, tornadoes. Earthquakes in major fault zones in major metropolitan areas all across the globe could happen at any moment so most actions or responses immediately to them is reactive owing to the context and circumstances. Even the strongest, most sturdiest, earthquake-resistant buildings, homes, complexes or infrastructure will be massively damaged or destroyed when a 7.5-7.6 major earthquake strikes.
When it comes to hurricanes, that's not the case and in most cases, there's a multi-day window where local and federal authorities can be proactive when it comes to evacuation, safety, warning locals about the dangers of flooding, severe thunderstorms, in the case of L.A. mudslides. People shouldn't be encouraged or the dangers of mass flooding, thunderstorms causing wrecks or other logistical problems to go watch a meaningless preseason game.
If this had been a smaller city like Jacksonville or Tampa, more then likely the NFL wouldve postponed it due to the chances of accidents or mishaps occuring from the storm being greater but since this is L.A. "hey, its too big of a city, there's really a less, miniscule risk of accidents happening or people getting killed, so lets get this game over with and get out"
I think that's a sign of reckless, arrogant thinking that thankfully, didnt backfire on the NFL. Fans attending that game couldve easily run off the road, got into wrecks, which couldve led to some drivers being seriously hurt. Terrible, inclement weather can seriously injure, paralyze, even kill people despite it being a once-in-a-lifetime hurricane/tropical storm pounding a city that's 20x bigger, larger and more populated then New Orleans.
Sometimes its better to use a excess amount of caution when it comes to preventing civilian deaths or injuries as it relates to natural disasters then having this carte Blanche attitude. MLB came across as being a lot smarter and less risk-verse having L.A.'s two MLB teams play double-headers the day before on Saturday. They approached that matter in a cautious, timely, proactive manner.