the entire game is designed to screw over monks
boss fight, fates, dungeons. none of em are mnk friendly
maybe t8 but thats 1 in many

drg and nin reach their optimal damage in like 5 secs
mnk needs 15-20 secs at least and it could be lost in 5 secs or less

and the worst part is that the mnk has no control over it

also other dps gets to pump out 1000+ hits with just 1-2-3 while mnk needs al least 3 rotation to start hitting that number