What did Boris mean by that!

Personally, I'm reckon a bit of disagreement within political parties can be positive and creative. It can lead to  better decision making in that it can expose an unwise step to closer scrutiny. I know that political party's whipping operations like to keep everything under tight control, but Farage/UKIP, Corbyn/Labour and Trump/Republican have shown us that in today's turbulent politics, where social media and fake news are so influential, dominating the agenda is what matters - within reason anyway.
Anyway Boris Johnson wrote a 4,000 word article for the Daily Telegraph yesterday which doesn't seem to fit into anyone's media planning. It's generated a lot of interest, despite being totally loyal to the Prime Minister, and not actually saying anything he's not said before. As always with Boris, his writing is flamboyant, and his arguments well constructed. And it will connect. The aspect that interests me is what he says about the claim made by the Leave side leading up to the EU Referendum that leaving the EU would allow a future UK Govt to invest another £350million per week in the NHS.
I don't think anyone can give us precise figures, but this 'promise' made in early 2016, would have meant an extra £18bn per year added to the NHS budget. I should add that though I voted Leave, I did not use this figure at all. It seems to me that we could spend £18bn per year when we stop paying in (prob 2022). Though Boris thinks it could be earlier. The Govt has already increased the NHS budget by £8bn per year since the EU Referendum,  and I'd be surprised if the NHS budget was not increased again in the November budget.
Boris is a brilliant wordsmith. His article or 'essay' is readable and conveys a joyously optimistic
vision of a UK outside the EU. It is in no way disloyal to the Prime Minister and it says nothing that he hasn't said before. It was a very good read. I'm looking forward to a similarly good read on Friday when the Prime Minister makes a key Brexit speech in Florence. After a few months when not much seems to have been happening on the Brexit front, it does look as if things are starting to take shape. It's very interesting times we live in.