But for a moment consider another factor, a broader scope. One of the ways I like to describe the internet, and its effect on the first generations to adopt it, is "we can share notes now".
What I mean by that is: previously a combination of physical barriers, geography, institutions, power structures, and communication constraints made it such that the vast vast majority of us really only got information from, and discussed information with, people within a day's-walk radius of where we lived. On the upside that meant lots of it was face-to-face and rooted in your family and community. On the downside that meant we were all incredibly isolated and living in an almost completely false understanding of the world.
The internet has pierced (or broken) that. I can watch in near realtime as the forest fires drive the people of Sydney from their homes. I can watch the chart of the wuhan flu grow exponentially every day. I have seen high def video of the slums in india, nigeria, and sacramento.
People of the past had far more first-hand experience with suffering than I do, but they hadn't the slightest inclination of the scale that we are all as aware of as we choose to be now.
I think that combination of your brain reeling at the vastness of "the problems" in conjunction with the powerlessness you feel about it leads to a sortof emotional shrieking in horror that plays out as "toxic" posting.
Which is in part to say, I don't think its going to get better anytime soon. As a matter of fact, as the challenges and constraints of climate change add pressure every year, it seems very very likely to get worse.