Is this meant to refer to the domain you're requesting, or does it literally mean that any person or organization that has ever participated in the seizure of any domain name that had ongoing lawful uses is banned? (For example, this would ban Microsoft, as well as arguably the entire U.S. government, from legally requesting certificates. The cases in question were a bit reprehensible, but it seems like an oddly specific requirement.)
...While this is of course standard for contracts, I also like the use of all caps and bold in the warranty disclaimer, which makes it extremely difficult to read, despite the U.C.C. clause that semi-not-really requires it being intended to ensure that signatories were aware of such terms! Let's Encrypt is a forward thinking organization; even if it's not terribly important, can't you take a stand against such absurdity and satisfy the conspicuousness requirement in a way that actually makes sense?