Taking one person's comment and extrapolating it to every person who saw the film in 70mm IMAX is so totally inaccurate haha.

He could have easily done it without, but he didn't. He chose to film this way for a reason. You can call him pretentious and that's fine, he might agree with you, but he still had artistic reasons to do so.

It's ok if you personally don't appreciate it. But other people DO appreciate it.