Pneumatic tires have always been made of vulcanised rubber though. Natural rubber is way too soft to hold up in this application.
Vulcanised rubber is a bio-based plastic, but being bio-sourced has nothing do with it being biodegradable. And vulcanised rubber isn’t.
There are bio-based-plastics that aren’t biodegradable, and fossil-based plastics that are biodegradable.
So far seem to be an uneventful upgrade.
Defaulting to wayland for KDE6 on a nvidia GPU doesn’t seem to have broken anything