You are moving the goal posts
Peak oil describes the extraction curve of conventional oil. You cannot then say that since we are extracting unconventional oil, conventional oil will not peak.
The cheap conventional oil is becoming a thing of the past. We are moving off of that fuel onto more expensive alternatives and the cheap oil will never come again. Peak oil happens. Then one day will come peak "unconventional oil". Will people claim that peak unconventional oil isn't happening if we happen to be lucky enough to have developed fusion by then?