Yes, I spent a lot of my life being very upset at a lot of people who weren't autistic until I read the studies that started coming out showing that it's verifiably the case that autistic people do various things that I have always thought of as "the autistic sense of justice", things that non-autistic people largely don't. For example, doing the right thing regardless of how observable your action is, or resisting social pressures not to break normalcy, or the OP's point about the bystander effect.

When I was in school, I was in the office as part of something else when another young girl began throwing up in the waiting room. There were between five and ten people in the room and the mouth of an adjacent hallway, most of whom noticed before me, because I was reading in the hallway. When I realised what was happening, I ran over to her and held her hair, helped her stay clean, asked the office ladies for a bag and help cleaning up so she could get to the sick bay without slipping, and generally did my best to comfort her. It was very distressing because I got some of the vomit on my hands and had to deal with that for a long time until I could wash them properly. This was not a gender thing because I wasn't the only girl among the students and the office ladies were female. Later that day when school was ending, I was in the office waiting to be picked up and one of the office ladies came over to tell me she thought I was very brave and selfless for having helped that girl. This made me really upset and I asked her why she and the other people hadn't done anything until I asked her for the bag, which got me in a lot of trouble for talking back to admin staff. The guidance counselor at school told me later that they didn't act because they were shocked, which didn't make any sense because they all learned before me so they should have had more time to recover from any potential shock and help, and it didn't make that much sense in the first place that someone just vomiting around them would put every single person into a state of shock.

That is the first incident I can remember where I felt this specific type of anger, but it happened many times in different contexts over the course of my life (once I started watching the news, it would happen very often because of the events depicted there). When these studies started coming out, it explained a lot of things to me and was honestly a huge relief. I had gone through life thinking that a lot of people who were otherwise kind were (apparently at random) cruel, or selfish, or prioritised doing the "normal" thing over other people being hurt, and I didn't understand why they didn't just do the right thing, especially in cases where it's not even hard to do. Specifically, it was reassuring to know that there was probably some neural or developmental difference that was causing them to act this way, and that it wasn't an intentional choice. I know being diagnosed as autistic and learning about autistic patterns of behaviour that I fit helped me feel less bad about how often other people complained that I had made them feel bad for responding to their emotions incorrectly, using incorrect emotions in a given situation, or making people afraid if I had a meltdown. It helped me not because I felt like it gave me carte blanche to just do these things which made other people uncomfortable or hurt, but because in understanding what was happening I could try to find ways to manage the effects on other people and counteract the parts that were anti-social when it mattered, for example by making sure to explain my tone and emotional affect explicitly in circumstances where I suspect someone has misunderstood it. My hope is that as more of this research comes out on why people who aren't autistic often do the wrong thing, it can help them to do the right thing more often and manage more effectively the consequences that their not-autism can have on other people, in the same way as learning about autism helped me to manage the negative effects that my autism could often have on other people.