I take issue with using the word "prove" when applied to testing specific cases, but maybe this is because I was a cs theorist before I was a software engineer.
Evidence you like "proves" claims. Evidence you don't like "purports to show" counterclaims. Luckily, people you like then "explain" why the evidence you don't like was wrong, and then it's "settled".
I pity the fool that can't get their UTF-8 encoding correct: "good software…"??