Why do most self-proclaimed or falsely labeled “constitutional scholars” quote the Federalist Papers and ignore the anti-Federalist Papers?

Because the Constitution was created entirely due to the victory of the Federalists over the Anti-Federalists. Before the Federalists won and instituted Federalism, we had the Articles of Confederation instead. The Constitution is inherently Federalist. The only way to return to Anti-Federalism would be to abolish the Constitution and either return to the Articles of Confederation or draft up a new document.