I agree with much of that.Yes, born in Gorton and growing up in a council house I am a leading member of the landed aristocracy.
You make the mistake of thinking all working-class people think like you do. Here's a hint. They don't. Some of us worked hard to get out of the bottom of the pool, while others chose not to do so but to blame others instead. I once came across a chap (also from Gorton) who thought that anyone who advanced themselves in any way was a sell-out. Yes, really. That man existed.
If you can't compete with people for whom English is a second or third language, you have to look at yourself. It isn't all a conspiracy against the honest white proletariat. There's plenty of opportunity in this country for anyone who is prepared to get their arse in gear. It just involves a bit of effort. I didn't have an uncle who was a director of a merchant bank. I didn't have a network of useful contacts from Eton. But I didn't sit around blaming foreigners for my woes. And there's nothing special about me. Plenty born with less have got a lot, lot further than I ever will.
By the way, I still regard myself as working-class. I was born into it, and all I have was won by selling my labour. So I am working-class and always will be.
However, a person isn't "good" or "bad" by virtue of their skin colour, or from where they were born. Or lazy, self entitled or whatever. People are people, wherever they are from.
I work with many immigrants. Some are great and just want to get on, as you say.
Yet some aren't. Just like those born here. In fact, our regional fraud team know exactly what is going on with human trafficking and it was a bloody eye opener at the last meeting I attended
Some sectors of society even see pimping out their kids as "normal."
It happens, and we shouldn't ignore it.