Have you read Piper’s original article?

https://www.desiringgod.org/interviews/christian-marries-non-christian-how-does-a-church-respond

I definitely agree about the more questions than answers! I personally think too many obsess to much over this topic. I really hate both the scammy profiteering by “experts” hawking their latest speculative book and the attitude that any inconveniences to living the Christian Life in the West are surefire “signs of the times” and mean Christ’s return is imminent- but decades of hardcore Christian Persecution throughout history and in other parts of the world somehow don’t “count”.

I found this article the other day that sums up my position pretty well:

The Apostle Paul thought he had rights-

Acts 22:25-29
25 And as they bound him with thongs, Paul said unto the centurion that stood by, Is it lawful for you to scourge a man that is a Roman, and uncondemned? 26 When the centurion heard that, he went and told the chief captain, saying, Take heed what thou doest: for this man is a Roman. 27 Then the chief captain came, and said unto him, Tell me, art thou a Roman? He said, Yea. 28 And the chief captain answered, With a great sum obtained I this freedom. And Paul said, But I was free born. 29 Then straightway they departed from him which should have examined him: and the chief captain also was afraid, after he knew that he was a Roman, and because he had bound him.

Acts 25:11
11 For if I be an offender, or have committed any thing worthy of death, I refuse not to die: but if there be none of these things whereof these accuse me, no man may deliver me unto them. I appeal unto Caesar.