Undoubtedly the political impasse of the 1970s characterised by intensified class and other conflict did not represent the ideal society. Neither left nor right claimed that it did. What was unfortunate was that Thatcherism emerged as the so-called solution to this crisis.
In essence, Thatcherism was about centralised authoritarianism which was used to weaken democracy and smash working class power. Inequality and poverty soared in the new framework of unbridled capitalism; and it was this model that has been continued and deepened by New Labour.
Thatcher gave birth to a socio-economic regime which both pulled apart the social fabric and which has now failed in its own economic terms. Blaming Thatcherism is fully justified. Had the miners won in 1984-5 she would have been stopped in her tracks; the rest is the what-ifs of history.