Doesn’t matter where a skill originated, it matters how they implement it here. That’s like arguing an author’s spin on vampires. “Twilight doesn’t match Bram’s vampires so it’s just wrong”. Tons of jobs are meshed up to create one in this game. It’s how SE decided to breath life into the franchise. Some of it feels wrong, but I still accept that it’s their interpretation and creative right. It’s like the call back enemies we always fight. They bare the name, to trigger nostalgia, with a spin to make it feel original.

DRK never had life steal in this game, that ability was given to WAR. Another great example (and more relevant to FF14) is current Thaumaturge (excuse me for not remembering the abbreviation). 1.0 was a mesh up of FF11s DRK and RDM. Drain, Bio, Dia, Aspir, Banish, Spikes…just to name a few. What we have now is almost unrecognizable from its original iteration.

I totally get what’s being said, you do have a point in that argument, but it doesn’t fit for this game. You could argue the change, but unfortunately, it really doesn’t have a point.