How do we build Socialism in Western Nations when they've been largely deindustrialised and lost manufacturing...

What are you talking about? Proletarianization is happening so quick and so suddenly it's causing shocks to the system, the proles are everywhere and you're one of them, every single one has revolutionary potential in some fasion

This guy got it. We could easily re-industrialize the first world and make the USSR's industralization in the 30s look like neoliberal stagnation.

Red Manifest Destiny will save the world, the quick conversion of the capitalist hegemony to a socialist vanguard state on the international stage would be literally unstoppable.

Internal shifts mostly. The US still builds a lot of cars, just not in Detroit. Even things like semiconductors that are steroptyped as typically Asian made still get produced in the US to a large degree. In short, there is still an industrial base. It's not as large as it could or in some cases should be, but there is enough to work with for building a socialist project. The Soviet Union gave it a good run with a lot less.

Jest let the US highways rot and build trains. Cars are a waste of material anyways.

absolutely bourgeois

Agree in principle, but in the transition you will still rely on cars as you have to reshape your entire built geography. Yo need to keep the roads for a while still to simply maintain the productive capacities that will build your trains and dense towns and cities.

Literally the "would that end racism?" but leftoid version.

You realise that the implementation of socialism in formerly imperialist nations would still fuck up the imperialist system, right?

If you live in sweatshop country, yeah. Meanwhile, the West has spent the last few decades exporting its proletarian jobs, and melded everything between lower-middle class and lumpenproletariat together into the precariat, which most definitely isn't showing much revolutionary potential. Porky effectively commodified the Western proletariat and sold it to China and other sweatshop havens.