It's the Day's Day of Days! Because This King Business.
You know, commenting on all that 1930s style dialogue really underlines this for me... we know that Muir's a classic comic nerd. He's had Sam dress up as Miss Lace, after all. A part of Muir doing plotlines like this is about running the sort of classic adventure stories that Terry and the Pirates, Wash Tubbs, and The Gumps used to run. And I will not fault the man for ambition.
The problems are manifold. Muir has not advanced as either a writer or an artist to make such efforts work, and is in a situation where, as I've noted, he will not advance, basking in the praise of an uncritical audience that applaud everything he does. Then Muir's politics color everything, by design, so we wind up with stories where the text is bad, and the subtext is worse. This strip is as delirious as Late Chester Gould Dick Tracy without ever having been, well, Golden Age Chester Gould Dick Tracy.
It's honestly kind of sad.