Because it’s about opinions that reflect one’s idea of reality.

For me reality/ truth is based on God’s Word, the Bible, and God Himself. There are absolutes.

Others reject that as subjective and merely consider it as words written by men.

But their reality is a man made “wisdom” of philosophers and scientists who propose a subjective and objective framework of reality, which dismisses God’s Word as truth. While objectivity and subjectivity are useful, they are also limiting when it comes to
defining or understanding absolute truth.

And the Bible addresses the fact that there are those things that only God knows

So, my point is that addressing an opinion about reality as subjective, is by its own definition a subjective claim.

That’s the “other” context