They say they are "preaching the word of God". All of them. Each one of them.
And who are you to contradict them?
God does not demand doctrinal or congregational unity for salvation.
So we're free to embrace falsehood? There is one God, one Gospel, one truth and one salvation.
Jesus came to give witness to the truth and he prayed that all his followers might be one.
John 17:17 Sanctify them in the truth; your word is truth.
And again, differences in administration of local assemblies to not by default demand differences in doctrinal position.
There's no where in Scripture where submission to one central authority is required for the local churches, the local body of believers.
Also, that line of thinking completely ignores the work of the Holy Spirit in bringing about unity amongst believers through their faith in Christ and being born again believers.
I don't agree with every single thing that the other non-Catholics on this forum believer, but since there's room for dispute among non-essential doctrines, it's not an issue. Romans 14 addresses that.
Not to mention that the differences in interpretation of the magisterium, the CCC, the pope's latest gaffes, whatever, put any interdenominational differences between Evangelical groups to shame.
I see plenty of that here to the point where FRoman Catholics, in their arrogance, take a PRIEST to task about things he says and never admit they're wrong or apologize.