Doodledog
I can't follow YouTube links as I am in company and anything with volume would be intrusive, so I am answering without having seen the video.
I do think that London steals the wealth of the country, and find it particularly galling when Londoners point out how much tax etc is paid by those living there, as (IMO) that just proves my point. You just have to look at the figures for how much investment goes into London compared to huge areas of the rest of the country. Also look at things like school achievement, unemployment and health outcomes. It's blatant and apparently unashamed.
Apart from that, there is very little geographical mobility, as house prices are so skewed to London and the SE. This has gone on for so long that whole generations are massively advantaged if they inherit. Graduates from areas outside London and the SE can struggle to find internships or to live on low salaries whilst they build careers, so again, mobility is seriously hampered, and it is not the 'best' people who get on, but those who can get a start somewhere that pays well.
'Downsizers' from London and the SE colonise whole areas where housing is still cheaper, but in so doing price out locals and make it difficult for them to 'move up' the housing ladder, as the better houses have been bought up by people selling much smaller ones elsewhere. There is no longer the chance for those with ambition to start in a smaller home then work to move up as their families grow. And don't get me started on second home owners.
Then there is the fact that groups such as the WI, U3A, local societies and so on tend to have over-representation from this who have been able to retire early because of 'downsizing', and their views on their new home towns can be jaw-droopingly patronising. Honestly, if I have listened to one person tell me how 'backward' the new town people have chosen to relocate to is in comparison to London, I have heard a hundred, and the same applies to what is left of my professional life, where the same prejudices play out in a different way.
None of it takes account of simple things like buying a council house on the Mile End Road and making a million from the sale. Or of how the fact that some people can do that, whilst others lose everything when their mother goes into care and the entire value of her house is used to pay for it means that the playing fields are not just wonky but in separate hemispheres.
Not only that, but local accents can be assumed to be inferior, and those from London and the SE as 'posher'. Seriously, more than once I have had Londoners with Eastenders-type accents tell me that they have been deferred to because they speak differently from locals. It's as though a London accent is classless and neutral, and people are assumed to be 'yokels' in their own home towns.
Added to all of that, if someone like me speaks out (as in this post) we are accused of having chips on our shoulders.
I am far from being at the bottom of the privilege pile by any sensible standards, and am very aware of that, so don't want to appropriate anyone else's situation. There will be worse things than house prices, career opportunities and so on that I haven't mentioned as it would be inappropriate to do so (obesity, benefit dependency, addiction for instance), and if anyone suggests that my rant was inspired by the 'politics of envy' I will explode. There is such a thing as politics of fairness, too.
Taxes and council tax paid by Londoners are far in excess of elsewhere simply by being higher wages and far more in numbers.
But in terms of per head govt spending, £15,371 in Northern Ireland, £14,759 and £14,842 in London. So if you want a better slice of the cake NI is the place to live, followed by Scotland.
People living in Wales are the biggest complainers about incomers, but 41% of people living in London are born outside the UK (and this does not count their children born here) and it does not take account of the 300,000 Welsh, 100,000 Scots, folks living in London or their dependents, nor the 150,000 who identify as Irish. so 10% of the London population So when folks complain about Londoners leaving and driving up prices, they need to look at the reverse.