Carbon tax, including as international tariff would sidestep that question, make the emitter pay and let the consumer choose.

Consumption isn't a perfect knowledge game (although people are more educated now than they used to be). Individuals are never going to be perfectly equipped to evaluate the ramifications of every purchase they make. Regulations on production and the impact of delivering certain goods are the only real solutions. Because production itself can induce demand, it has to take at least part of the responsibility.

We are well past being equipped to know the ramifications of using energy to move mass long distances.

Using more space, traveling further distances, and moving more mass is all it comes down to. In order of impact, it means detached homes, individual huge car and air transport, animal food products, and shipping things across oceans (aka things stamped with made in China).

Approximately no one is willing to give up these luxuries on a nation scale.

You're placing the blame on the wrong thing - The embodied energy of producing most of the things we consume is much higher than the energy of shipping. Shipping on a massive container ship is really impressively efficient. (Shipping by air is a very different matter, of course)

You can see the same thing if you look at the energy cost of food shipping: perishable goods like asparagus are shipped in refrigerated planes, and the added energy of shipping is huge, whereas bananas are shipped on cargo ships.

https://ourworldindata.org/food-transport-by-mode

For example

True, I should have replaced shipping with the mass of everything else we consume.

The people in control of emissions policies.

1. Governments.

2. In functioning democracies, voters.

And yes, production.

When it comes to regulations, production. Stricter laws in the US just lead to shipping production overseas to locations with less strict regulation.

Regulate trade. Carbon taxes on production and shipping disincentivize this.

That gets very messy very quickly. You could have just as easily taken that step on labor conditions years ago.

I agree, there's roughly three parties to blame, the large corps, the junk manufacturers and the idiots who buy cheap chinese junk en masse

This might be ever so slightly off-topic and a silly question but why aren't sites like SHEIN being banned like Tik-Tok? They cause infinite harm, and clearly we're capable of banning big chinese sites, so why the holdup on SHEIN/Temu? I saw news about Congress members in the US calling for bans last year but nothing happened.

Because TikTok was likely banned for not cooperating with intelligence agencies or perhaps cooperating with the wrong ones.