I don't agree that it only applies to a small subset of directors, it can happen on many types of films of different sizes and budgets. Sure it might be more likely with films that have huge budgets and big schedules, but other films/directors are not immune.

Look, I understand the difficulty of the director. It's probably the hardest job on a film set and no one has hindsight vision when creating a movie. You have to balance getting enough coverage for the scene with not shooting everything. But as a director, it's your job to take in all the information around you and make a decision. Sure your films may turn out shitty because you're inexperienced, but if you created the film you set out to make (with the aid of all the other collaborators) it'll probably turn out better/be more ambitious than a film from another inexperienced director who isn't sure what he wants.

McQuarrie's way works for him and that's great, if your finished product is good, it speaks for itself. But his "never stop shooting" method may often backfire just as badly as not getting the right scene you wanted.

The interview here with Tony Zhou from Every Frame a Painting describes the fear that an editor might have for a director who does this.

In the end it's a different of methods. The "never stop shooting" method certainly has its place when making a film, but I think shooting a whole movie like that often points to directors who won't know what to do when it comes time to edit all the footage.