p.s. Just to make clear for new people, the basic Fediverse logo is in the public domain and anyone can use it. I did not make the Fediverse logo. You can find the Fediverse logo and its credits at:

https://commons.wikimedia.org/wiki/File:Fediverse_logo_proposal.svg

My accounts use variations of the Fedi logo with themed icons added in the middle, and it was specifically one of my variations that the troll was using. That's why I did the original warning post.