Sorry I'm not very techy and don't understand. So I I keep mentioning Nigel Farage, the Brexit Party, thebrexitparty.com near each other, that's bad? And if I mention Nigel Farage, the Brexit Party, / near each other repeatedly, does that make a difference?
Google try and cloak page ranking in all sorts of ceremony and ritual to justify the existence of SEOs. But the general principle is the wider the terms appear over the internet, on the busier sites, with different origins and surrounding text, then the higher it will start going. Generally it's the underlying criss-crossing that can shoot a term up. The more sites that refer to the more sites, the higher the term.
DS spent 2 years at an SEO outfit, and I suspect he told them more than they told him 
. I used to live amongst marketing types that lived and breathed payclicks and A/B trialling.
The thing is, we'd be **ing up Google (be careful, profanity can down rank you ...) for free whereas Farage and his chums are probably going to have to pay to reverse the effects. Not that they'll be strapped for cash, from what I hear ....