I don’t think they were saying they’re Nazis; unfortunately, many people can’t recognize the harm a group does if that harm is slow or “off-screen” (like the poverty or civil restrictions most conservative policies inevitably result in).

I think they were just using a conservative group such as the Nazis since it’d be much more obvious to the average person as to why we need to draw a line, with some groups, and cleanly indicate why OP’s blanket statement that “everyone should be welcome” can’t possibly be true.

There are those who view this offer to share their thoughts and existence as an opportunity to permanently terminate the same of others.