Note: if you somehow manage to uninstall system packages you can’t reinstall those (afaik). At least i ended up having to reset the phone twice while setting up and trying to change the default camera app. Not the worst on a new phone i guess.

This only disables these packages. Any OTA update re-enables them, and you have to re-disable them again.

I’d also recommend the universal android debloater. makes the whole process quite easy.