from the Charter, Article I, Section D-
My opinion is that this would not apply to a Ruling Steward, who is Kaiser in all but name, but to a Steward acting temporarily during a Kaiserial LOA.The Steward of Shireroth shall be vested with all the Executive, Legislative and Judicial powers of the Kaiser but may not repeal or amend Imperial Decrees of the Kaiser.
Notice the phrase is "the Kaiser", not "any Kaiser".
This is moot now, but should be clarified for future events. Steward Corey had the support of the incoming Kaiser, but future Stewards may not be so lucky.