Dps job design issues due to lack of utility.

[Roda]

Yes, it is a dps loss. It is not hard to make utility spells oGCD abilities. If you have to choose between dps and some fancy flavour buff that doesn't actually prevent death then it's only logical to choose dps.

If silence is a thing in FF14 then savage & ultimates would be far too easy if it works there, if it doesn't work there then it is more or less useless because in normal content you don't need to be using more than 30% of your kit to clear the content. If a spell is not required to be utilized to achieve optimal gameplay then it is essentially redundant. You can do more by not using it. If you want more utility in the game then the game encounter needs to change drastically. Something that I doubt would happen.

Silence is a thing, but it's more a quick time event for tanks.

Also interrupts work well when they 1, have cooldowns, and 2, require group participation.