I'm sorry, but some of this sounds like hyperbole of the hyperbole. What serious person is out there saying that a 90 degree day in New England is dangerous and requires people staying inside? Everybody knows the information environment is crap on balance. Even the general public to a large degree gets that. A met on local tv saying a heat dome is going to give us highs of 95 with a HI of 105 so take precautions otherwise it can be dangerous is very different from some kid on YouTube saying the heat dome is going to kill everybody. Yeah, they get clicks, but I don't encounter a lot of people in normal life who are cowering in a corner because of something they heard from a random online.
In the face of a lot of bad information and hype out there, a lot of professionals and serious hobbyists have tried to counter that with using more probabilistic forecasting and communication, contextualizing how weather is not climate, and explaining how the science is the same even when terminology changes.
To be clear--I believe the information environment is profoundly worse on balance than it was 30 years ago. There is too much hype, too many bad actors cashing in on quackery, and too little nuance introduced whenever we do have high end events (not every hurricane or major flood is directly tied to climate change, not every temperature drop below zero/above 100 is historic, etc) but I don't think it's fundamentally changed how most people make decisions, especially in advance of/during high end events.
Not yet at least.