I really don't think that's true, most are not fine with the Daily Mail or Bannon style culture war politics. You can draw many things from the election victory but not that.
I'm sorry but that is exactly what you can draw from the election victory.
In functioning democracies all politicians, or most of them, say what they think the
voters* want to hear and then appear to act on it. Political life can be long-lived for one or two frontbench politicians, or it could be in days gone by, but for most political leaders/frontrunners today they get 5 or so years 'in the sun' when they can 'do something positive', always assuming that is they want to do something positive, not merely develop their own legacy. Thereafter most become only a shadow of their former selves, they do something wrong politically, or mess up in their personal lives, or try to swim against the tide.
Arguably the two most successful British politicians in the last fifty years have been Margaret Thatcher, because she did what she said she would do, and stuck to it whatever the cost. Thatcher only failed when she realised the EU was heading for the buffers, but allowed some of her cabinet to undermine her and she didn't follow through. The other was Tony Blair who carried New Labour to victory in election after election, but he became so convinced he was almost invincible and that if need be he could charm the birds from the trees, he even believed that he could dictate to George Bush.... but we all know how that ended.
Most of the people (
mob rule = democracy) are tuned in to simple ideas/slogans, we see it time and again. The problem is that the right gets a slogan going, promotes it endlessly but avoids explaining exactly what that entails. The left has its own slogans and is getting better at promoting them, but then it can't resist immediately try to explain every nuance!
Most *voters i.e. those of eligible, age , residence etc. want to go to the polling station not weighing up the pros and cons, they just want to put their 'X' in the box, against the name/party behind the slogan, because they agree with that, or if they disagree the opposing name/party. 'Tactical voting' on a large enough scale to have any effect is a myth, the closest to such an outcome was the Brexiteers who formed themselves into what appeared to be a new political party (
i.e. not just a pressure group within a party) and then threatened to stand in certain seats.
Most voters are not gullible, but they are not genuinely interested in the political process and the recent debacle over Brexit has highlighted the dangers of either assuming they are gullible, or ignoring what they say, the left needs to take note and quickly.