He did the Nazi salute twice, intentionally.
He said "my heart goes out to you" because of plausible deniability. He was giving his followers an argument to deny that he did it intentionally, both to themselves and others.
He has not directly denied it nor apologized for it.
European leaders are acknowledging it for what it is. Neo-Nazis are acknowledging it for what it is, and they loved it.
People who are sincerely on the fence about this, admitted they actually exist, need to wake the fuck up.
This isn't actual proof of anything though. This is a publicity stunt by someone trying to promote this Eliza project, which has nothing to do with X because actual X code used for the described nefarious purposes wouldn't be on a public GitHub repository. More importantly, someone who "can't sleep at night" due to their involvement in election interference wouldn't link to the tool they used to do it and instructions on how to use it.
Having a .json "character file" for a Trump chatbot filled with Trump rhetoric is not proof of anything the writer is claiming. Anyone could do that, including LLMs.
I'm not saying similar technologies/tactics weren't actually used over the last few years, in fact, I strongly believe they were. All I'm saying is that this article is nothing but bait. Fact-checking is more important than ever now.