To be fair, he reasons that the sole purpose of football is entertainment and it is hard to deny that referee mistakes are controverse topics that cause much attention and thus entertainment. But you don't visit the doctor or your accountant for entertainment.
However, I still disagree completely. I happily sacrifice a little bit of entertainment for more justice. That is assumed that VAR provides more justice which is not given in Germany. If you have incompetent referees who make wrong decisions although they saw everything perfevtly, slow motions and video footage won't help either. Especially if the VAR is inconsequent in when he interrupts the game. In the Bundesliga there are incidents when the exact same scene is corrected by the VAR in one game but not in the next one.