*Edit: I checked some of the stuff more out in detail. While some concepts on this are valid and backed up by sience, others like RSD are not. Use this as a springboard for learning, not as a valid source in itself. Yes it says so in the corner already. But spelling it out might help.
People are more complicated then a diagram from the internet. Never forget that.
I think “highly developed morals” refers to, for example, internally consistent morals. Calling them highly developed shouldn’t be understood to imply the morals are “better” or more “right”, only that they are consistent. My neurotypical family members have morals and they will preach those morals to literal death. When actual circumstances of life require a sacrifice of them to live within the morals they preach though, they have no difficulty imagining a special exception to those morals.