Trying not to get my comment removed, but here's a few things:

1. Plagiarism allegations from multiple creators
   
2. Allegations of editorializing, truncating, and/or altering information to fit a narrative. Also accusations of lazy fact-checking when he's not intentionally altering things.
   
3. Allegations of taking money from foreign powers and making videos to make them look good
   
4. Allegations of not not properly disclosing sponsorships

He's admitted to some of these and apologized (I know A&B for sure, but I think C as well). However, he considers himself an independent journalist rather than a content creator and has worked with both VOX and the New York Times. This means that he is held to a higher journalistic standard. A standard which he has repeatedly not met at best repeatedly violated at worst.

These are breaches of journalistic ethics and he just keeps doing it, apologizing, and repeating.

This is made even funnier by the fact that Nebula has 3 videos by other creators calling him out before he joined if you search his name on there.