Aliexpress already dealt with something similar years back when they had to stop using USPS for brokerage. They've got their own in-US logistics now - "SpeedX". I ordered some things this month - 9 days to my door, delivered in a consumer vehicle. I suspect within a month or maybe two of the de minimis rule going away, we will see Aliexpress start doing something like showing the additional tariffs at checkout and handling the clearance at scale.
Not that Krasnov's blockade isn't horrible, of course. It just seems primed to backfire here as well, like the rest of the destructionists' purported agenda. Underemployed people in a collapsed economy are more likely to try scrimping every last penny they can by shopping at places other than convenient-but-overpriced Amazon. I wouldn't be surprised if direct from China purchases actually went up as a proportion of sales.