Earlier quoted context omitted.
But relatedly, money being treated as speech is antithetical to a functioning republic democracy.
Money is not speech, and courts do not treat it as such. The most famous recent case, Citizens United didn't even flirt with the notion. (Despite much commentary to the contrary, apparently from people who didn't read the decision.) Money does, however, enable speech, and restrictions on things which enable us to exercise fundamental rights is at least potentially a restriction on that right. That's the framework the…
And there are plenty of laws limiting speech for example in schools. So, outright limiting say TV advertising would be completely constitutional and have the side effect of limiting exactly the types of speech you're talking about without constitutional issues.