Late-night, unedited rambling:
I agree with the charge that Jess Phillips is an irritating, rent-a-quote media luvvie, even if she very bravely kept her regional accent, but I don't think it's fair to characterise
her Guardian article as some sort of dogwhistle. Labour does need to win back white working class votes, many of which are distributed across the Midlands and North. Her constituency is 70% white and voted Leave. We shouldn't go down the Democrat route of abandoning these places to the right.
The worst thing about her article is that it offered no solutions beyond "having a conversation", the same thing Labour have been doing on these sort of issues for years. It was a controls on immigration mug in article form, just meaningless buzzwords about "the debate".
That said, I'm pretty sceptical about intersectionality in its current state. I suspect there's a reason that the corporate world, media and professional classes are now obsessed with talking about gender and race, often to the point where
their attitudes are more progressive than minorities' own opinions. If your doctrine has been taken up by massive, exploitative corporations, then it's not a threat to them in the way proper class solidarity is. It won't create material change.
I think Corbyn had the right idea to fight the Tories with a class-based message. The problem was that it wasn't primarily a working class message, more one for the downwardly mobile middle class, and its scale was too wide to be credible for people who have lost faith. Labour should have prioritised cheaper childcare and retraining, not free university, for example. Most people round here just want easier lives, without having to struggle through the meritocratic lottery.