That's debatable. First, it's public information he used. Anyone could have analysed it themselves if they wanted to find suspicious people. Further, if someone discriminates against these people just because their names appear on a website alongside "we're not accusing them of anything", then that person may be doing something wrong. But that person probably discriminates against all sorts of people for trivial reasons anyway, and maybe we should think of ways to make them behave in a more socially tolerable way if we don't like it.

Especially since they are liable to be sued in the UK, who have a very strict libel law.