There are plastics that can be made from renewable materials as well. Not that I’m advocating for 3D printed houses, I think that is a terrible idea, but not for any of the arguments made here.

I’m not the OP, nor am I very good at succinctly summarizing what’s in my head in a way that I’m confident would do the topic justice.

The specific term you probably want to look up is “Linear no threshold”.

I think the video Kyle Hill did several months ago though covers the topic very well though.

https://www.youtube.com/watch?v=gzdLdNRaPKc

I have some small nitpicks on how exactly he argued a couple of his points, but his over all point seems reasonable.