War's a bit squishy?

[TouchandFeel]

60-69 you wont have that in your pocket while Drk will have all of their mass pull tools available ... Similarly Drk doesn't get TBN until 70 making it suffer from tank buster actions much more than the readily available inner beast war has while leveling.

The italicized part of the quote isn't really true though.
As you pointed out DRK doesn't get TBN until lvl70 and TBN is a foundational piece of it's AoE/mass pull capabilities. Not only is it a big part of soaking damage since Dark Mind does squat in pretty much all trash pulls, leaving DRK well behind in defensive CDs to use if they don't have TBN; it is also necessary to keep your MP up so that you can keep casting Abyssal since you have to cast and break TBN to get the 50 Blood to then use Quietus that then gives you back MP so you can keep going.

DRK definitely doesn't have all it's tools pre lvl70 just like WAR doesn't. PLD really has it the best in this regard since Passage has pretty much nothing to do with mass pulls.

The rest of the post was quite true though and the leveling process can really be awkward with job kits only really coming together at 70 and that people shouldn't really worry about min/maxing before level cap.