No.
This passage says what it says - that Gentiles in the church at Rome are not to disrespect Jews.
I am talking to you Gentiles. Inasmuch as I am the apostle to the Gentiles, I make much of my ministry 14in the hope that I may somehow arouse my own people to envy and save some of them. 15For if their rejection is the reconciliation of the world, what will their acceptance be but life from the dead? 16If the part of the dough offered as firstfruits is holy, then the whole batch is holy; if the root is holy, so are the branches.
17If some of the branches have been broken off, and you, though a wild olive shoot, have been grafted in among the others and now share in the nourishing sap from the olive root, 18do not boast over those branches. If you do, consider this: You do not support the root, but the root supports you. 19You will say then, "Branches were broken off so that I could be grafted in." 20Granted. But they were broken off because of unbelief, and you stand by faith. Do not be arrogant, but be afraid. 21For if God did not spare the natural branches, he will not spare you either.
A clear instruction to the actual Gentiles to whom Paul is writing.
And the understanding problem is not mine. I am fully aware, and have repeatedly stated that the epistle is indeed directed to Christians.
What you seem to not understand is that there were Christians of Jewish ethnicity and there were Christians of Gentile ethnicity.
And Paul is vitally concerned with encouraging them to get along.
Look at Galatians if you do not think that Jew - Gentile division among believers was not a problem.