Lets at least agree that having plot holes is a NEGATIVE thing (regardless of their severity) - yes? Plot holes and continuity issues usually not something that movies should be encouraged to have, agreed?
With that out of the way - this movie had multiple plot holes that I noticed in my very first sitting. Now you can keep categorizing them as "minor" or "they didn't matter" all you want, but if they were that insignificant then very few people would've noticed them or cared to dwell on them. I personally noticed them the moment they happened and therefore I consider them as things the movie got wrong - if they were as minor as you claim, I shouldn't have noticed them.
I'm not alone:
http://whatculture.com/film/x-men-days-future-past-10-questions-singer-failed-answer.php
http://www.slashfilm.com/five-big-continuity-issues-x-men-days-future-past/
With that out of the way - this movie had multiple plot holes that I noticed in my very first sitting. Now you can keep categorizing them as "minor" or "they didn't matter" all you want, but if they were that insignificant then very few people would've noticed them or cared to dwell on them. I personally noticed them the moment they happened and therefore I consider them as things the movie got wrong - if they were as minor as you claim, I shouldn't have noticed them.
I'm not alone:
http://whatculture.com/film/x-men-days-future-past-10-questions-singer-failed-answer.php
http://www.slashfilm.com/five-big-continuity-issues-x-men-days-future-past/