Creating a babbling persona, no matter how charming, does not entitle you to editorialize in situ. To do so both destroys the narrative integrity of your character and forfeits your readers' suspension of disbelief.

Imagine Swift speaking directly about politics while Gulliver traveled.

Your gullible readers deserve better.

Many reinforcing works have to be done in-situ. Take your common door lintel cast in-situ. It's done that way to protect integrity, rather than bringing the house down on ourselves- Gulliver would have pissed himself if that had occurred, don't you think?