Per the Talmud, conversion necessitates only:
brit milah as applicable,
a sacrifice while the Temple stands (not currently) and
learning / motivation / beit din (bundling these because the beit din judges learning and motivation so they’re kind of inextricable).
Therefore, halachically, converts who undergo these steps are fully Jewish.
Non-Orthodox converts do this.
They are fully, halachically Jewish.
Orthodoxy has added its own reinterpretations. And I’m not opposed to new interpretation in general, I believe that each generation adds to our knowledge, we learn more and improve, etc etc, but to pretend that Orthodoxy is More Authentic or somehow Unchanged is asinine.
the Talmud specifically accepts conversion for the purposes of marriage (Yevamot 24b:6), whereas Orthodox Jewish groups today do not
the Talmud does not say you have to send your children to Jewish as opposed to public schools in order to be a valid convert but Orthodox Jewish groups today do
Charedi clothes are not ancient Israelite clothes. They were not wearing fur hats and black coats in ancient Judea.
the Talmud also indicates that many people had pretty limited Jewish knowledge immediately post conversion, indicating that the Orthodox practice of only converting people once they are up to community standards is novel
And again, I don’t think it’s wrong that Orthodoxy has its own interpretations of Halacha, just as Reform and Conservative do. We are one people but we are not automatons who always think and feel and need the same things. Someone needed to figure out how to navigate electricity, airplanes, IVF, chemotherapy, and other things that did not exist in Talmudic times.
Just generally, I think that every person on earth would benefit from sitting awhile with the concept of “with very few exceptions, everyone always thinks they’re right.” That’s just being a person. Most people don’t wake up in the morning and go “you know what? I’m going to be a bad person.” Or “I’m going to do Judaism wrong.” Definitely people do that. But we all think we’re right. We’re all only human.
Anyway, Nonnie, if YOU want to cut YOURSELF off from us, I can’t stop you but… We all think we’re right. You’re not special for that.