Don't quote me on this but plastic is mostly used for cases and coolers, and sometimes structural elements. Electronics are silica wafers (not plastic) with copper or gold etched onto them. We'd probably have to stop using plastic for phones and buttons and such but it's not a big change.

Besides, we have many types of plastics with wildly different chemical compositions. It's unlikely all of them will suddenly become biodegradable.

I mean... shooting down dissenters is what's going on in Iran and Myanmar and that's... not good.

A wall of cops / military in riot gear is the adequate response, mowing down civilians is a hard stance to defend from an ethics standpoint.