Intel OEM Private Key Leak: A Blow to UEFI Secure Boot Security

Obviously it isn't in everyone's skillset, but if you have the means there is nothing preventing you from generating and using your own key.

Honestly it seems like a good basic security precaution, not only to prevent against leaks like this, but also to counteract any backdoors (although kind of a moot point with chipmakers).

In many BIOSes were you can apparently remove all keys and the firmware still loads its own builtin components, that's because the manufacturer has put a backdoor so that their own components can always be loaded irregardless of Secure Boot state. (Otherwise users would be able to brick their own machines). MSI, for example, does this. And guess what: with these leaked keys, now anyone can claim to be a "manufacturer's own component". Secure Boot is useless.