I think that that POV that states that legal discrimination creates fissures in society has merit. And I think that POV has historical backing.
The economist in me wants to believe that discrimination in the buy/sell transaction is always solved by the desire of the seller to make money. Unfortunately, we have a very sordid history in the US where entire towns of people decided to put making money on hold so they could regulate (for lack of a better term) a white society through peer pressure (for lack of a better term).
Hence my position. The ability to discriminate needs to be based on something other than “I don’t like you”, in my view.