Some very valid points
@cremeegg .
I will play devils advocate for the moment.
The UK, having left the EU, is facing into a period of uncertainty. Whether it strikes a deal with EU or not, the promises of Brexit, and Britain being an independent leader on the global stage need to be demonstrated. The population will need to feel a real tangible benefit, a Brexit 'bounce', for want of a better phrase - none more so than in Scotland, NI and Northern England.
Without it, the political divisions are likely to get more entrenched. Scotland more likely to move to independence.
So what better way than enduce a feel-good factor than putting money back into the pockets of the millions of people who are currently working to stand still?
Of course, it will all depend on how its managed. Building bridges between Scotland and NI sound like great big white elephants, and would support your analysis.
However, large injections of capital supporting British made goods and services through research and development, science and education, innovation and technologies, etc, will help propel this new independent economy, free of the shackles of EU restrictions.
Britain, and the Union Jack, despite the nefarious history that many are aware of, is a massive global brand.
Brexit has been heralded, by its proponents, as an opportunity for Britain to re-invent itself and re-establish itself as an independent global leader for trade.
It wont achieve this by simply running neutral budgets on a flat economy.