I did not read most of this thread, but was anyone disrespectful? I did not see anyone say anything mean - or anyone being "simple". Maybe I need to go back and read more. Skipped over a big chunk of the threads.
But, anytime someone starts a thread with skin color as a theme (let alone in the title), intentional or not, race is going to be discussed. It is what it is. That is why it is better to just stick with hair types, even though they are pretty general, too.
A thread like, Are there any long haired 4a/b hair types that had short hair as a child, would have turned up far better responses. Actually threads like that have been created in the past.
But, it is no biggie. I don't think anyone is really taking offense or being sensitive (at least from my observation)