Agree but try "last 300+ years" rather than 30. Sadly I don't think Brexit will be their salvation. The problem with the UK and class has always lied with domestic politics. This wont change whether we're in or out of Europe.
We're entering a new industrial revolution - a lot of white collar jobs and blue collar jobs are being disrupted or eliminated. For example every factory and driving job will disappear in our lifetimes, many office jobs will be disrupted. New jobs will be found, we'll be more productive, and the world will be better because of it, but history shows us that this sort of disruption and destroyed livelihoods leads to violence, revolutions and unrest. We will see a similar situation to the original industrial revolution.
I do think it is misguided and harmful to attempt to try to find scapegoats for structural changes in society (popular just now are immigrants, muslims, corporations or evil federal governments), which is why I disagree fundamentally with almost every argument advanced for Brexit (from foreigners are taking our jobs to the evil EU is out to crush our democracy). It will not end well when people don't see improvement in their life but suffer more, and wonder who is to blame if not immigrants.