So I'm curious, if this can disable Secure Boot, is this a pathway to jail breaking devices that do not allow you to install your own keys?
Can you ask a more specific question? The article covers a number of topics and without any additional information, I can only say, "yes, there's a good chance you can disable secure boot -- but no, there's not a high probability of success."
It would be, if there were any Lenovos that didn't allow you to do that.
And if there were, they wouldn't be compliant with Microsoft's requirements either.
those requirements were changed, secure boot having an off switch is now optional.