He's using a very similar name and icon to the other uBlock. I don't think Google likes that in its store.
At least change the icon. And I would just name it uBlock Zero or something else entirely.
As a side note: gorhill, you were specifically criticized by others before for using the symbol μ in your extension's name, because that symbol doesn't exist on the keyboard. And now what do you do? You adopted "u" instead in the beginning, but started using subscript 0 in the new extension. Come on, man! Just use a name that's easy to write and tell others about!