Honestly I saw approximately NONE of that. I don’t live in the UK, but coverage of the Brexit proposition I saw was universally against; the exit movement seemed (to me) like Nigel Farage and about 3 others. I watched I would say 40 interviews with Nigel and he was called every name in the book, with every single talking point thrown at him.
Frankly, I think “stay” might well have passed had not 0bama gone over there and scolded Winston Churchill, his most hated statesman ever.
Many reasons for this, probably the most telling being that the Remain campaign thought a win was a dead cert so didn't need to try very hard. The leavers caught the attention of the media because they were passionate, even when some of their claims (such as the notorious "£350 million a day extra for the NHS") were, to put it politely, fanciful. The remainers concentrated on rather less passionate analysis, statistical and economic arguments etc, which are always a media turn-off.