Fairness is definitely subjective and yet it is something humans feel extremely strongly about! Look at the estate threads where one sibling is willed more than the other. Both are getting money but the one getting less is more upset than if neither were getting anything.
So politicians are always going to talk and argue about ‘fairness’ in society.
I don’t think any of us (hopefully not anyway) would like to see people starving to death on the streets or dying of easily curable diseases, due to a lack of funds.
Equally, communism doesn’t work as people want to be, and feel it is fair to be, rewarded for their skills and efforts.
So we argue about fairness in between these two poles. The main parties aren’t actually nearly as far apart as most think. It is amazing how vitriolic people can get over the odd 2% difference in total taxation.
And the right wing always notice taxes but fail to notice pro wealth policies such as bank bailouts, too low central bank interest rates, lack of house building, COVID grants and purchases, zero CGT on primary residences and, especially QE.
A lot of bankers would have gone from high six figure take homes to zero had the banks not been bailed out by taxation on far poorer people. And there is no guarantee they would ever have been reemployed at anywhere near the same rate (same goes for City Lawyers and all the wealthy who service the bloated finance sector).
The reality is that, while high earners moan about things like putative wealth and property taxes (the first of which will never, realistically, happen), government policy (not talent!) has served them extremely well over the last quarter of a century. You only need to pull up a graph of income/wealth by quintile/decile to see the difference, and when you look at the top 1% or 0.1% vs the rest, it becomes very extreme.
Realistically, politics is difficult. It is a discussion about priorities, with no obvious wrong or right answer. I also think that the world (tech, especially AI) is changing so fast right now, politicians can’t keep up.
But that doesn’t stop a lot of people being utterly convinced by either right wing or left wing arguments without much to back them up.