Boris mentions the need to remove the Irish backstop. This point is correct.
However, with regard to the rest of the EU authored Withdrawal Agreement, it is not about being locked into Eeww Law or Trade "without a say," as Boris puts it. We are currently 'in and with a say.' We want OUT, to decide our own laws and trade deals as we see fit.
Also, do not forget the UK's armed forces are not for sale or rent, and, we want the rights to protect and fish our own seas.
Neither the Tory ERG or Nigel Farage's Brexit Party will quietly accept a removed Irish backstop + BrINO. I sincerely hope the UK govt are reviewing that entire EU treaty.