Avi Loeb is a wannabe Michio Kaku
The guy is an embarrassment.
He makes wild claims unsupported by evidence simply to get his name in the press...
He has been on radio Sputnik more than a few times... that is how cheap a media whore he is...
So what is 'Oumuamua? The debate continues; speculation is ripe in such a data-poor environment. Harvard astronomer Avi Loeb has used the lack of data to propose that 'Oumuamua is an alien spaceship. But considering intelligent aliens may be capable of doing whatever they want, this could be an explanation for pretty much any observation.