The reason I've come to this conclusion is because without first accepting (implicitly or explicitly) the existence of objective value, nothing else can possibly make sense. No theories, observations, descriptions of the world... Nothing.

The acceptance of the existence of objective value can also explain the question you just asked.

You asked me "what's the point?" You used the word purpose, and you specifically asked about the purpose of viewing something as "wrong."

Asking for the point is to presume that there can in fact be "a point."

If value were purely subjective, there couldn't be a meaningful point to anything. Yes, all valuations are subjective, but those valuations come in degrees of quality. In economics, the market judges that quality though a quasi-evolutionary process (when it's working correctly, but under subjective value theory there is no such thing as "working correctly").