Let me start by answering the question.
No I don't believe he is.
I do believe though that what he has been doing for the cryptoworld has been a bit undermined by the way he does things (although like it or not, it has been proven effective).
TRON's whitepaper was widely accused of plagiarism, but in the words of Charles Caleb Colton "Imitation is the sincerest form of flattery". If you could take someone's idea and make it better, wouldn't you do it? I bet most of us would.
Now, my limited understanding of crypto in general doesn't allow me to say if TRON's technology is better, worse or the same as other crypto's out there, but what we can all say is that for better or for worse, Justin Sun has found a way to stay relevant in the crypto world and with his team he's doing what he can to commit to what he proposed, and that is to Decentralize the web.
Will he be able to achieve it? Only time will tell.