They are very scared that he will be a successful president and they'll get the rug pulled out from under them again next election. It is obvious what a thread Trump is to them by how strong their attacks.
This would be a more convincing troll attempt if Trump had given people any reason to believe he will be a successful president, haha.
I can’t remember any president appearing weaker at this point in their administration and with fewer accomplishments, especially considering unified control of government. He just doesn’t seem to have the intellectual capabilities or work ethic necessary to do the job well.