'I love your hair' because of the history of balls bodies being fetishised and found fascinating by White people
For me this is the sort of thing I don't find offensive but some do.
I don't think it's fair to say that making the choice not to include a black character is 'lazy'. There's seems to be a lot of issues around racism where there's diversity of opinion and things are experienced diffidently. That's right, because black people are not a 'hive mind'. If you have a focus group of 5 people you might get 5 different opinions. If you go with one of them, you're offending all the others
One would go with the majority, as other focus groups work (no hive mind in most I believe). A lot of products marketed to women don't apply to me and some other women but as the majority in the focus group or society in general say they would find it useful/good/inoffensive/whatever, companies would go for it. Sometimes, they realise just how wrong they were once the products hit the shelves. Other times, it works out for the majority.
And as I said, if it then happens to be wrong, it's life. Take it on the chin, try a different approach and move on. Women aren't excluded because they all don't like the same things. So yes it is lazy to not bother, if one is going to be dealing with the public. Black people are part of the public.
I'm glad you found the posts useful.