I think earning above £70k does involve an element of luck. You were lucky not to be have been born with a learning disability, lucky to have been born into a country with a stable economy, good education system, social security - hard work yes of course - loads of people work hard and they don't earn £70K or anywhere near it. There's loads of elements to your life that you have no control over - lack of awareness should not be one of them!.
This is a little disingenuous. Most people posting here have no learning disability, been born into a country with a good education system, the same 'relatively' stable economy, "good" education system (debatable), the same access to social security etc.
I grew up in a very deprived area. I studied, many others didn't. I left home very young, an abusive home, and yet still living with their parents they achieved lower grades, while I was also paying my rent. They had help through Uni, I did not. I studied after Uni and worked 80-100 hour weeks to get to where I am while they did not. So I achieved this wage (not sure why you picked £70k as special, maybe based on a PP I missed) but I got there by my mid-20s despite that start in an abusive family with no support. And have got much further since. The fact of that is that many of my peers were just as bright as me - I am not special - and the same if not much better opporunities were there for them. I made the effort, and struggled for years to get where I am, and yes, that does deserve recognition and there's nothing wrong with people having pride in those achievements, especially when they are against the odds.
The other side of it that we should also consider is that as well as socio-economic circumstances, much of intelligence is heritable. And it's not someone's fault if they are born without academic ability. Or a particular talent for something else lucrative. For sure, much more should be done to help children find their talents and allow them to focus on them - one thing you are brilliant at is so much better (for your mental wellbeing and financially!) than being "ok" across the board. The education system in the UK is dysfunctional in this respect. But regardless, even if a child has no particular skill, they are valuable as a human being. We need to find a way to structure society so that it is about looking after people, not valuing people based on their abilities. That is no more within their control than what country or time they are born in etc.