That's empathy which is a different concept than treating someone with respect.
> learning about a lot of kinds of people and their experiences.
Having knowledge of a breadth of different people's life experiences is also a different concept than respect. The author proposed "treating people with respect" as the minimal normative standard. You seem to be rejecting his proposal of "respect" as insufficient and instead are proposing an alternative which includes empathy and a "lifelong process" of gaining broad knowledge of different lived experiences.
While those are valid things to propose, you're suggesting a meaningfully different standard by expanding on what respect "sometimes means." It's worth highlighting because I interpreted the author's central argument on this point as being "treating people with respect" alone should be sufficient as the minimally acceptable standard. Whether I agree with the author's proposal or not, I understood it to explicitly exclude requiring anything beyond how we treat others.
While this may seem like a minor distinction, it strikes me as central because the concepts of feeling empathy and having a lifelong interest in acquiring cultural knowledge go to our internal thoughts and feelings, whereas the author's proposal limits itself to our external behavior - which I take to be his point.
It'd more useful if you'd been explicitly direct in your response, perhaps something like "Just treating people with respect is not sufficient. Instead, the minimal normative standard should be..." It would be clearer that you disagree substantially with the author and what you're proposing instead. It would also enable a more interesting discussion about whether society should limit itself to judging how we behave toward others vs going further to judging how we think and feel about others internally, regardless of our external behavior.