I do get what you're saying, but the Bystander Effect doesn't even work at those scales of economy. Not only that but the Bystander Effect is a very learned cultural phenomena. It even mentions as much in the article you linked. Sorry if you didn't catch my edits ex posto facto since I was sourcing after but I did end up mentioning it in anticipation of that rebuttal when editing lol.

The root difference here isn't the finer details though. It's probably going to end up in an agree to disagree sentiment.

I firmly and vehemently deny that trusting in the goodness of humanity to work on and solve issues that many people don't even think about isn't rejecting reality.

You believe it is. It's literally just the difference between a jaded cynic and a hopeful optimist. Behind every jaded cynic there usually was the later. I just hope you get there again and do see the beauty in the world around you and have faith in your fellows while knowing ALMOST EVERYONE is doing their small part. Some much larger than others.

Generally the people who don't help were never going to anyway. I believe that's a fools errand that requires far more effort than any benefit gained from it.