Read the sefer of R’ Haim Amsallem, the teshuvot of Mishpetei Uziel, Melamed LeHoil, Drishat Tzion, and others.
Even R’ Moshe Feinstein was sensitive to the concept.
I learned thoroughly the Sefer Zera Yisrael. I am thankful that there are rabbanim who hold like the Mishpetei Uziel.
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In addition, almost every major bet din in America gives special consideration to people who come having already identified with Judaism in one way or another. Obviously, a complete gentile who knows little or nothing about being Jewish is a different case than someone who has been already a part of the Jewish community.
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