So...DRK kinda sucks now.

[RadicalPesto]

Yeah, having not much else to do but repeat one combo with next to no ogcds and then spamming one ogcd multiple times when raid buffs are up, is so much better than having to watch your mp and weaving extra ogcd whenever you'd overcap, while still conserving most of your mp for the spam burst windows. /s

That's a really weird way to move the goalposts, given that your original statement is that "Edge Spam" is in no way different from "DA Spam", which it, uh, absolutely is, from a quantitative point of view, unless we're of the view that "ten" and "four" are basically the same number. Dark Arts constituted 20-25% of Dark Knight's APM in Stormblood, while Edge of Shadow is so lacking in spamminess, that "Dark Knight doesn't regenerate enough MP to use Edge of Shadow enough" is a common complaint, since it turns out that there's a lot of granularity between "you use this action on average every 6 seconds" and "you use this action on average every 15 seconds".

Also the Dark Arts animation was very much not designed to be spammed and as such felt bizarre and unsatisfying, like if Warrior pressed Inner Release between every GCD. Edge of Shadow looks and feels satisfying and immediately gives you feedback on how much damage it added, and, visual and audio feedback can make a huge difference. See, for example, how much people dislike the feeling of Delirium, in comparison to the feeling of Inner Release, solely because of the animation spammed.