I agree that’s part of the problem, but even if that weren’t an issue you’d still have the (IMO) much bigger problem of most consumers preferring whatever product is cheapest.
Wht saddens me, and I seem to see lit. nobodoy talking about is our glamourisizing 3d plastics printing of billions of arbitrary objects - and where these plastics will end up in the ecos...
3d printers (I have an ender3) should be urged to have a recycling platform.
Personally - I want a 3d recycling machine which will shred HDPE, melt it to pellets and make a filiment extrusion for the 3d printer.
We should have the 3d printing community building recycling stations from 3d filiment and object fails etc... and try to close the loop as much as possible.
(lookng at you cosplayers of microplastic contamination for internet points)
The issue is that it costs more than a 3D printer, and often times the filament is not as good later, so you end up spending time and energy recycling when it would be less time and energy to create new filament.
It would probably be better to put that time and money into insulating your house and growing flowers for local birds and bees.