Because left v right, the old class war, ended in '89-'92 when the Wall came down. Capitalism won, Communism lost. We were then told in a well regarded book that was the End Of History. And it sure felt like it, that seamless Clinton-Blair third way, America the unipolar power, Putin driving a minicab in Moscow, China not even on the radar as a threat, but all those lovely cheap Nikes and other consumer stuff we couldn't get enough of.
Then, just as we're settling down to the End Of History on a Groundhog Day loop, a certain Osama Bin Laden started bombing American interests in N. Africa in '98/'99, we know what happened just 2-3 years later, the End Of History became the big unravelling, weaponised by the banking crash at the end of the decade, we've never recovered, China is now a wraith over the world, Putin has returned to late-19th century war making with 21st century tech, and Trump is reinforcing Spheres Of Influence not seen for 150 years.
What did the left do in the meantime? Did it look to counter globalisation, push for onshoring, push back against mass migration, at all deter illegal immigration, pull us together with colorblind policies and putting toxic trans ideology and associated cancel culture back in the ground where they belong?
No, it's said nothing about the future of work, it fell for the biggest cons ie intersectional IDentarianism, and in doing so, drove a schism thru Western societies.
Even now, while the UK is floundering, where we need to get in top of our spiralling debt, infinity welfare state, frankly frightening lack of growth, total inertia in the machinery of state, Starmer has no answers, and the imbeciles cosplaying at adult politics ie SNP are fucking around with burning precious invaluable social capital in pushing for trans in women's jails. It's batshit insane.
The left has flipped on any serious class analysis because they lost in 89-92, they've been looking for something ever since, and have landed in the worst possible answer, a mix of turgid technocratic nothing governance (Starmer) fused with echo chamber virtue signalling (SNP).
2029 will see for the left.