Alibaba has warehouses & hubs in Europe (and I assume the US), where it first imports to its own subsidiary here, so this is somewhat debateable.
Ok- a transcontinental pizza order from a slice shop in Beijing, then. AliExpress’s logistics are obviously not relevant to the metaphor.
With Alibaba it gets complicated. There are things like duty free warehouses where things can be on US soil but legally have not yet been imported. But that does not apply in the UK. 4chan does not have servers or proxies in the UK. If it did, Ofcam can go after those local entities and I would not bat an eye.
Same thing if I make a web request for content on a server overseas.