You're still not getting it, and your comparison is invalid I think: the Nazis wanted to eradicate the Jews, and they didn't care about how observant the Jews were. Anyone with Jewish ancestry was a target.
Transgenderism isn't like this; it's not something you can determine from ancestry, nor is it an ethnicity of any type. The right-wingers see it as a personal choice, just like homosexuality. Of course, trans and homosexual people don't feel it's a personal choice, but it IS a personal choice for them to act on their feelings. What the right-wingers want is to force all these people back "into the closet". They want them to conform to their cis-hetero worldview, just like they did back in the "good old days" when homosexuals found either other homosexuals of the opposite sex, or unwitting heteros, to legally marry so they could appear to polite society as regular hetero people, and then did their homosexual stuff in secret, if at all.
This is why they want all these punitive measures: not so they can eradicate trans people or imprison them all, but to make society intolerant of an open expression of non-conforming sexuality. Basically, make an example out of a few people, and everyone else will fall in line: this is their thinking.
Again, to be clear, I'm not endorsing their position; I'm merely trying to explain what I believe their true thinking is. The conservatives are famous for idolizing some rose-colored halcyon (and somewhat mythical) idea of 1950s Americana, and my idea above falls exactly into this pattern, unlike your much more extreme idea of death camps.