The phrase "irrevocably linked" is correct and usable in written English.
You can use it to describe two things that are inextricably connected, such as ideas, memories, or experiences. For example, "My childhood was irrevocably linked to the summers I spent in the countryside."
Drinking and smoking are irrevocably linked.
His consciousness & his creativity are irrevocably linked with his homeland.
But it is a concept that is irrevocably linked with Germany's history and its future.
Sadly, British doners have become irrevocably linked with the worst of our weekend excesses.
Soon he had met and enrolled in his band an Argentinian doctor, Che Guevara, whose name was to be irrevocably linked to the revolution.
Free of associations at the moment, it will become infused with our ideas about Isis – just as al-Qaida, rather than bringing to mind its translation, "the base", has become irrevocably linked with death and destruction.
Tirelessly logical, sometimes agonizingly so, he lives life in an extra dimension, with a sense of time that irrevocably links past and present, living and dead, ardent love affairs and broken ones.
Charles Darwin's name is linked irrevocably with natural selection.
So, irrevocably, has Jenny Calender (Robia LaMorte), the computer teacher briefly linked with Giles until -- in the most terrifying and upsetting phase of the show -- Angel lost his soul again and, still obsessed with Buffy, the girl who made him feel human, began to prey on her friends.
So while one can list any number of cultural trends from the 70s or 90s without linking them irrevocably to Ted Heath, Harold Wilson, John Major and Tony Blair, that's far harder to do with the cultural products of the 80s.
Remember the time that school friend of yours linked you to Salad Fingers and you were simultaneously amused and irrevocably damaged and horrified by the post-apocalyptic, Flash-animated creep-fest and haunting soundtrack?
