I guessing that tweet refers to the Hogeman: Internet Astronomer post I did this afternoon. That post contains no copyrighted material belonging to Bill Schmalfeldt. It does, however, contain links to his material, and linking to someone else’s work is not the same thing as posting it.As can be seen above, the post in question only contains links. Clicking on the SoundCloud link takes you that site. YouTube responds to its link by serving the video back to this site, but the video is on YouTube and being streamed from its server.
OTOH, the Cabin Boy routinely takes copyrighted material from this site by using images of entire Hogewash! blog posts on his Twitter feed and websites. He has never asked for permission.