Ah! I've heard of him! ;)
Yes I saw his Tweets. He's been criticised for a Tweet suggesting - like a lot of others at the time - that the #Brexiteers "won" and that everyone else should "get over it". He has changed his mind, as is the right of every sentient being, based on facts that became apparent soon after the vote took place and have become increasingly so as time goes by. In reality, these facts were there way before the referendum, but some folks were happy to accept that they were "fed up with experts" and that a new form of fact has arisen known as "alternative facts" (ie "fibs"). All sounds a bit silly now, doesn't it? :D
G x