Trick Attack is as strong as ever and it's not getting any weaker, and Ninja's raid contribution still eclipses Monks.
If Monk gets pulled back then it just ends up in the position Samurai is currently in, it's hardly 'Meta' right now to the point where it may as well be the 3rd option for the 4th slot in the party after Summoner and Machinist, and the only reason people are raging at it for being to strong right now is because it's the flavor of the month and O6S lets it inflate itself. So no, it does not need to be pulled back.
And even if it did, this is the stupidest way possible to do so, because it just hamstrings Monk in a way that's unique to the job that other jobs don't suffer from (Kinda like Riddle of Earth in comparison to other buff refresh skills) and in a way that will just get ignored so it's not going to pull down the jobs damage anyway.