I feel that this has things inverted. People generally don’t care about the packaging or even the materials in the product. Those choices are made almost entirely by the seller.

Why should the buyer be responsible for cleaning up the seller’s mess?

If it’s possible to economically create products that don’t produce waste then this should be mandated, because otherwise there will always be some asshole corporation who is willing to undercut competitors on price by externalising costs to the environment.