For most people outside the very niche finance and tech investment bubbles stocks are largely understood as a form of gambling and managed funds as a high yield alternative to a savings account with a small risk of losing money (but this requires some disposable income so again this is somewhat self-selecting).
The ordinary Hans Wurst (German Joe Blow) just follows the economy section of the news for a general feeling of if things are going good or bad because line goes down means prices go up and they probably won't get a raise.
The lesson most voters take away from this seems to be that leftism is just false advertising and if you vote for leftists you just get the same politics but more dishonest, not that the "leftists" they keep voting for aren't actually interested in leftist politics (though I can see why Die Linke might be unappealing as they're a headache even if you see them as the only viable option).
You will get your defined benefit pension, but how much you can buy with it is variable. And it is going to be less than you think. That is the only way the equation balances with lower economic growth (especially due to lower population growth) and increased competition for resources from the other 7B people in the world.
In the UK almost everyone will have been moved over to a "defined contribution" pension whose value is determined by the stock market, usually in the form of a "stakeholder pension".
I don't "do" the stock market but I do have such a pension. And every few months sweep spare cash out of my current account into an index fund. Effectively I pay people to worry about this stuff on my behalf.
People who retired more than about 10 years ago are far more likely to have "defined benefit" pensions whose value is independent of the stock market.