If you don’t usually do this, then simply don’t. You are wrong and whether or not you wish to admit it, you are still going to be wrong when you take this stance.
The difference between the racists in the Germanic (and any religious) communities and our actions on this blog is that we, as outsiders of the cultures we’re discussing along with cultural appropriation, are striving to support the cultural integrity and cultural relevance of a variety of minority beliefs and cultures. It’s not the same as people claiming that they are better than everyone else so only they have the ability to worship these deities - it is the people from these cultures saying “We still believe in this, and outsiders keep ignoring us and making mistakes, so now we don’t want outsiders to stick their noses in.” That is nothing like the elitist behavior that comes with white supremacy and racism.
The fact that you had to put endangered in quotations shows just how little you understand of this phenomena. Ásatrú and similar practices derive from the beliefs and practices of Nordic peoples, coming from cultures that do not exist in their original or pure forms any longer. There is no one left from the original culture to say “Hey, you’re doing this wrong, can you please stop?” so it’s open and free for anyone to do. The same cannot be said for many of the cultures people like to take from when they are told they are told these are closed and their actions are culturally appropriative.
A group of people advocating against cultural appropriation to protect minorities is not the same as a group of people barring those of another race purely because they think they’re better than those other races.