the libel laws in the US and UK are different, which is why people tend to sue in the UK. I believe in the US, a public figure who feels they have been slandered has to prove that the allegation against them was false and the person who made the allegation knew that it as false and acted maliciously. But in the UK, the person who made the allegation has to prove that the allegation was true. It's a lot easier for a public figure to win a libel case in the UK.
I don’t think I am a fan of prof Gildersleeve, but I can see an application of his paradigm. When a man spends most of his time lounging around in his bedroom, watching TV and twittering, when he is not driving a little cart around one of his golf courses, he may appear to be lazy. Alas, he may in fact be engaged in postqualitative inquiry.