First and foremost I find your way of presenting things a bit, how to say it ... arrogant ?

It's your right to have an opinion but the least you could have done is to try those jobs at level 60 since most of them changed a lot. Dragoon has Blood of the dragon which makes the job feel really different and Monk got some great QoL skills that makes it a lot more enjoyable to play. Also ninja got aggro management skills and a few oGCDS, which indeed didn't change the core of the job.

I highly suggest to at least check out how those play in a raid environnement in order to have a clear view on how they play in the hands of good players. Claiming "this is bad and I don't like it" relying on outdated information won't get you anywhere.

Also, you can expect changes to those jobs in the upcoming expansion, we have little information as for now but we can expect more later this month.