Depends what you mean by that. What does it mean to be a failure as a human being? He certainly excelled as Mayor of London. He also was wildly successful with his role in the referendum and then in a huge General Election win as a party leader.
As a person he has had a fair bit of success yes Brexit, he jumped on the bandwagon and brexit was founded and won on lies, Boris excels at lies. But human, a human is judged in my view not just on success or money earned, but by what and who he became to get there. A serial liar, bully, narcissist, lazy bumbling fool is not a good human being in my view, that's where we probably differ and will never agree.
