They did, yes. So if the post had said “Trump marketing reminiscent of Nazi mass murder policy”, it would have been correct.

But it doesn’t - it used the word “slogan”, which implies it was a self-descriptor. The Nazis never used that phrase in reference to themselves, so the post is misleading.

From the substack you linked:

Historians note that while the exact wording “One of ours, all of yours” was not a verbatim Nazi slogan, it encapsulates a Nazi ethos[3]

Again, I fully agree that that the phrase encapsulates Nazi policy quite well, I’m just disputing that it’s a “Nazi slogan”.