They are thinking about supporting webkit vendor prefixes in their browsers to help with the mobile web... for things not even becoming standards.
"Non-webkit browsers will support the -webkit prefix. That is the solution being considered by the W3C."
You might not know this but XenForo supports the latest tech once they can by adding the vendor prefixes at compile time if all major browsers support them. So this is something you might not notice but XenForo benefits from how the current system works and any changes wouldn't really chance anything for XenForo. However in general for the web... this is just stupid.
Mainly posting here because I want you to sign the petition.