Interestingly, the white people who complain about this episode usually want to claim that the episode is racist because a black man has interest in a white female. (Hmm, complaining about racism with racism).
From what I've read that is not the main issue most people have with this episode but the portrayal of a "tribal" culture with very archaic rituals and laws that seem uncivilized and barbaric coupled with casting only black actors even though that wasn't part of the script.
I think the original director was fired along the way because of that and Les Landau was hired to somehow finish the episode at least.
I still don't see a major fail.
It's almost as if someone's faux pas actually turned into something that could actually be, as aforementioned, ambitious. Again, if the episode was so allegedly bad (it wasn't) it would have been awesome for the producers to come back to this world and expand on them.
There are TNG fans that gush over season 3 - 6. Well, Season 3 could have had the Ligonians return, and show them as a culture that was on the level of the Vulcans. Or even a higher level.
Too, Western (e.g. American) culture is pretty good in pushing Eurocentric ideas and pushing the idea that anything Afrocentric is bad. For instance, I don't see anything wrong with the Ligonians being inspired by African tribal cultures, as well as being inspired by Asian influences. However, I do see a potential problem where it is the white TNG officers coming down to save the Ligonian civilization, which I didn't really see happen.
At the time, I had a schoolboy crush on Tasha Yar, so I thought it was kinda interesting to see a black man interested in her....and Yar in him. (I still find Lt. Yar pretty cool, and was upset when Denise Crosby left after the 1st Season).
They should have got someone like Stephen Barnes, or the amazing Octavia Butler to write an episode featuring the return of the Ligonians. Octavia Butler has actually written amazing - yes, that word again - interracial stories, as well as stories that have Asian characters. However, it's easy for the white producers to just claim 'racism' and bury the idea.