These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fanon Discontinuity - Hal's first soliloquy, "I know you all", explains how he's not really a fun-loving rascal—he's just pretending to be one to make it more dramatic when he decides to get serious. A lot of the commentary on the play begins by carefully explaining why he doesn't really mean what he's saying.
Of course, if you don't ignore the soliloquy Hal gives, then he's easily the best chessmaster in Shakespeare.