Considering what I saw on social media, plenty of people were just breaking into that festival
Generally I'd say outdoor events like that haven't proved to be much of an issue, but I'm not really certain that's the case with delta for me to confidently say that anymore.
As for the crowded train, I question how effective masks would even be in that situation considering how tightly packed that is and airflow is likely extremely poor already. Probably better to still wear one regardless, but if you are going to Lollapalooza, you've basically accepted the risk already.
I'll be going to Guns N Roses on Thursday in a packed stadium (well, it's not close to sold out, but still like 30k people).
We should all purposefully contract this damn thing, then, assuming we can't get it again, just be done with it. (not totally serious, but it did cross my mind...)
The problem is the ~1% that would die from doing this and the overload of the hospitals, but in the end, this is essentially what will happen just spread out over time. Everyone in this world is going to get exposed to covid. I feel at this point, it's not about not getting an infection, it's about getting vaccinated so you don't die from the infection and don't overload hospitals. It's proven to work for that. I feel we will be living in a world of constant covid exposure and I believe that's why the US is basically acting like covid is not a thing anymore. We have to move on at some point. We can argue if that point is now or not, but with a proven vaccine readily available, why should we wait any longer to move on?