> and defer overly to expert opinion

The term 'expert' here actually means well-funded lobbyists who pay to have access to the politicians. They are able to present decision-makers with convincing arguments to pass laws that are favorable to the ones funding the lobbyists. They are smart and they are experts, but they are also laser focused on using that expertise to get what the funders want. This is almost always an outcome that is bad for regular people.

it is bad because experts are narrow. Consider my example, The police will (correctly) tell you that giving them more powers will reduce crime. The problem is that reducing crime is not the only considering in what powers the police should have.

its also not true, if we listened to expert opinion more often we wouldnt have had numerous extreme economic and policy failures in my rather short life. Austerity, Brexit, Covid, Public Order Act 2023, every moment of those last Tory years.