I really think that, in the most literal sense, he definitely did post a Nazi-era symbol to his Truth Social account. You can see it in the source I posted (I don’t know what the live page looks like, whether he deleted it, etc.).

To say Snopes is wrong is to suggest an interpretation of what happened that doesn’t agree with material reality. The image was on his account and he would reasonably have known that it would be there once the link was posted.