of course it is, for good and bad. Protection for the aristocracy inside, with a lot of pre-entry tickets handed down father to son (not daughter) as inheritance rights, demarcation barriers to keep the peasantry outside, structured differentials to denote status and caste. When I got my ticket and started moving from job to job it gradually became apparent that the guys who did the card checks spent most of their working day sat at the back playing cards. Of course those were the days when a job was supposed to be for life, the employer expected to provide the work, the worker to remain in the same shop (ie same grade) throughout.
There were positives, of course there were, but as a beneficiary of the tail end of the system I didn't mourn its passing, and certainly wasn't up for more than token resistance, and nor were the factory workers I grew up amongst. I might occasionally chunter at work that we should fight to bring it back but in reality I quite like working with people who get jobs through equal opps rather than who they know and who they're prepared to salute.
Sorry if that's not what the working class thinks I should think.