I partially agree, but if my private pension needed to invest into the underperforming FTSE250 by law, I’d just opt out of that system and put my savings into a US/Emerging-markets index myself.
I’m not patriotic enough to spaff my compound interest opportunity on a bunch of dying tobacco, oil, & mineral extraction companies to put any of it to work in the FTSE250.
A lot of those investments are self-fulfilling though.
I don't think regular people should have a say where their pensions are invested. It should automatically be in what's best long term for the country they live in.
I don’t think it needs to be the FTSE and I don’t think it even needs to be all that much in UK funds but if you look at the default allocations of many large pensions it’s single digit UK equity exposure which I think isn’t really acceptable.