There is no such thing as Christianity with without doctrine which discriminates true beliefs from false beliefs just as there is no such thing as a country without borders which discriminates citizens from aliens.
So, to be a Christian is to necessarily reject false beliefs, believing some people to be wrong. It makes no sense to say you don’t judge other beliefs as wrong yet are still a Christian. By definition, you are not. Quit trying to avoid persecution by a feigned faith which misdefines grace as someone who does not draw lines. Grace presumes the existence of lines or grace is no longer grace.
When a Christian says that it is not his place to say the Muslim, Mormon, or Atheist is wrong, I say it is not your place to claim Christ.
The central borders of the Christian faith start and end with the person and work of Christ. Get these wrong and you are in a different country.