Their opinions. It may be best to wait and see it for yourself.
Otherwise, combining both your take and Dephender's take, it seems to be mixed.
Even if some of the audience who saw the film disliked it, I've learned not to take their opinions too seriously myself cuz I tend to like most of the unpopular Pokemon films any ways ha ha. I'm just excited regarding the supposed old character cameos in the film's end credits.