Here Paul is stressing that you can be a Christian even if you don't become a Jew first. We got over this hurdle so long ago that we have a hard time getting back into the mindset of the earliest congregations.
But, we need to.
We need to think about what groups we are excluding, and what basis we are using to exclude them.
Paul said to the people of his time struggling with the disputes of his time that Jesus had abolished the law with its commandments and ordinances, so that he might create in himself one new humanity in place of two.
We are confident (pretty much so) that Paul didn't mean that anything goes. Should we be so confident that what we think is absolutely essential in belief or action is on Jesus' must-do list?