I think the evolution of post religion and post liberal society, fractured by social media, and demanding binary positions, is creating the worst excesses of "if you're not with us, you're against us". EU Leave/Remain, Trump/liberals, now TWAW/GC, and many more.
I miss the days when it was socialism/capitalism, Python/Goodies, Starsky and Hutch/The Professionals, Blur/Oasis, Agent Scully/Buffy, lol
I also think decades of pop psychology and inane self help mantas leading to this Authentic Self mindset, and the move away from any judging of individuals' behaviours or group mantras, has led to the mother of all contradictions, a softening of the underbelly of society at large (no principles, no standards, just gooey "feel good"ism) in a brittle shell of infinite and eternal conflict, fragile pride, absolute lack of self reflection (because if you looked in the mirror and were really truthful with yourself, you'd shed yourself of juvenile notions). A hard carapace over a soft belly is great for insects, not humans.
Stir this up, and weaponise it via leftist politics, where society is now replaced by the self (the left's spin on Thatcherism "there is no such thing as society", indeed our Maggie unbeknownst at the time was the starting gun for the breakdown in liberal and social mores, codified and expanded by Blair, allowed to ferment by Cameron to Sunak, now championed by Starmer and Davey and Youssaf), and we have the situation we have today.
Fuck knows how we extricate ourselves from this. I have my theories, but they're pretty wild. And because the rot of post religion and post liberalism are now both entrenching and accelerating, it won't be painless.