It's a pretty fair statement to me. Compared to when I was growing up anyway, before the concept of buying your own council house was even thought of, and when only about 3% of people went to Uni...... you're confusing class with wealth.
Class is cultural. I've got a family of rich builders living across the road from me but they're still neds. My old man died without a bean but he wasn't scum like some of the people I see with their BMWs and their bling.
BTW I never grew up in Sneck and to an outsider it seems a fairly prosperous wee place. Try visiting Paisley, Kilmarnock, Motherwell, Methil, Greenock, Glenrothes....... Alness even.
You are born Working class. You CANNOT move to middle class. Even with all the money in the world. If you started working class then you had to WORK for your money. So you cannot move out of your class. Sounds stupid, you may not agree. But its true.