I think that marijuana legalization in particular can be used as an example we all agree about. (Does anyone reading this actually disagree about that? Leave a comment if so.)

"All three statements in a sentence have the same denotation"

Alas, that's not the case.

Also, we already have access to a language that is purely denotational, with all of the connotations excluded. We call it mathematics. It's useful and nifty.