But already in Paul's time, the message was being threatened. It fared no better among the Gentiles, especially after the bastardization created by the Roman church.
You are entitled to your own opinion. Not so your own facts. Even to this day to announce, as a Jew, that you've put your faith in Jesus Christ (whether or not you mean it) is to get badly ostracized. Messianic congregations (Jewish Christian churches) will accept you... but no other Jews will. You'll get some flak as a gentile but far, far less. Half the Gentile world at least claims a Christian affiliation. Don't diss God's achieved plan.
As a Sabbath keeping and somewhat kosher Christian going the other direction, I can assure you that the ostracizing is just as evident in Christianity as you portray it in Judaism. And 'Christian affiliation' is no better than any other. What matters is the truth. That which distracts from the truth is not of YHWH.