It is pros and cons which is nice about this game.

Monk may have more positionals but as others have mentioned it flows more fluidly compared to other jobs as well. Monk's stances, which includes positionals, also makes monk's attacks very versatile. You can literally go from aoe combo into single attacks because of the way their mechanics works and you almost never misses a combo as well because accidentally pressing the wrong string is almost impossible since it will not allow you to press them without being into those specific stances except for boot shine and dragon kick.

Dragoon and Samurai though despite having less positionals will get punished severely by missing a string or pressing the wrong button since they will need to restart again from the very beginning of their combos. Imagine as dragoon you are on your second combo then pressed the wrong third combo, you literally lose the rest of your combo string and start froooom the very beginning ugh.

For me the challenge for monk is not positionals but rather reflex memory. I kind of have poor memory so remembering when to reapply demolish etc is hard without looking at my buff debuff bars and that kinda makes it stressful for me on complicated fights where we need to think and act fast. I could do the all flank and all rear combo to make monk simpler buuut will be sacrificing how monk is suppose to play to maximize dps. But if you are not into min/maxing then the all flank and all rear combo still does decent dps to be honest.

Happy Gaming