Earlier quoted context omitted.
Never? Even the whole "corporations are people too" meme where this sentiment presumably originated from is often misunderstood. It doesn't mean corporations have the same rights as people, it just means they can conduct transactions and can sue/be used. It doesn't mean they can vote.
It does in one town in Delaware, at least: https://www.reuters.com/legal/government/delaware-court-upho...
How could corporations voting not dilute the human votes by the very nature and reason of voting in the first place?