I like to focus on your first remark, in order not to digress too much, I was raised in a Christian environment and even got some affirmations in them, and I had a few teachers who studied theology. Only later I left that environment as I became an adult.

“Love thy neighbor” is not just a favored feature, it’s the pivotal commandment that Jesus himself stressed after being asked “ One of the teachers of the law came and heard them debating. Noticing that Jesus had given them a good answer, he asked him, “Of all the commandments, which is the most important?”

As how we should execute that command is a different discussion I feel, and what kind of societal impact it would have. So my core argument is that this commandment hasn’t always received the proper adherence (imo)