Why do scholars question if William Shakespeare wrote Act 3, Scene 5 of Macbeth?

Question

I know it isn't the rhyme scheme, but there is something within the scene that shows that Shakespeare didn't write this. If anyone knows an answer is appreciated.

Answer 1

The most important reason is that the scene is frivolous. There's no reason for it; it doesn't move the story forward, and serves no purpose but to bring on Hecate so she can introduce a song-and-dance routine. Every other scene in the play is loaded with action; even when the characters are just going off on soliloquy there is a great deal of internal action. But that one scene just bogs down and serves no purpose; for that reason modern theatres, which tend to be strapped for time and money, seldom perform this scene.

Answer 2

Shakespeare Act 3 Scene 5

Answer 3

Rhyming, iambic pentameter, thomas middleton