There are people who do stupid things all the time like not buckling up their seat belts or driving when they're impaired. Like Forrest said, "stupid is as stupid does".What do you think is going to change?
There was a nice day in New York City this weekend and a good amount of people said "Fuck it, it's nice out. I'm going to Union Square." This isn't 6 months or a year later, this is right in the middle of the worst catastrophe in the city's history with bodies in makeshift morgues and when these people could literally catch a fatal disease and they still ignore warnings & go outside so I don't see people being too scared to go to a concert or a sporting event or a movie in the near future. And of course the people that went out in NYC only represent a small minority of people but if it's happening now, I don't see the majority of people who are currently being cautious greatly altering their lives after it ends.
For what it's worth, I'm not 'rooting' for people to learn nothing from this. I'm just saying that I think that's the likeliest outcome for most people.