@Peregrina Why don't we see your list of Brexit achievements?
Again, you need to look at the timeline and other World events.
23 June 2016
The UK votes to leave the EU
29 March 2017
UK lawmakers trigger EU Article 50. So, by 29 March 2019, the UK should have left the EU with or without a withdrawal agreement in accordance with Article 50. This did not happen as remain MP's wanted to ignore the referendum result.
31 January 2020
The UK leave the EU with a transition period to 31 December 2020.
March 2020
COVID begins to take hold of the World. So, governments around the World are forced to shelve any prior plans they may have had and give priority to protect their citizens from COVID.
The UK spent Approx. 400 Billion. The World in total spent US$ 10 Trillion. Approx. 10% of World GDP.
Global spending on health: Coping with the pandemic (who.int)
February 2022
COVID had began to subside and Russia invades the Ukraine. This causes World energy prices to soar. So, again governments around the World gave priority to their citizens by helping with energy costs.
The UK spent 100 Billion. The Word in total spent US$ 7 Trillion
Fossil Fuel Subsidies Surged to Record $7 Trillion (imf.org)
So the QT audience talked about issues which concern them most now.
Correct. Nether Brexit nor rejoining the EU was mentioned at all by either the audience or the panelists representing; Conservatives, Labour and Liberal Democrats.
Now, eight years on from the vote and four years on from actually leaving, their perception is that it's falling apart even more
Yes. Explanation is simple. The same money can't be spent twice. So, the 400 Billion for COVID is 400 Billion less that could have been spent on the NHS. Likewise the 100 Billion spent on energy subsidies is 100 Billion less that could have been spent on the NHS.
So, Brexit has been sidelined as UK government and others around the World have prioritized tackling the more immediate concerns of their citizens.
Do you think the average person/family around the World would prefer their governments spent time on securing trade deals or helping with the immediate issues which are affecting them now?
The EU claims to be the largest trading bloc in the World, but poverty is increasing due to; pandemics, conflicts and climate change.
Are; pandemics, conflicts and climate change all attributable to Brexit? I would say not.