I think you missed his point.
FFXI came out in 2003 and was developed by the same company - though this is a different engine and team - we can take it as an example: Benediction from FFXI, that they (Square Enix) can produce twitch reactive commands with a "tight" feeling to them.
FFXIV's Aero and Regen both feel tight and reactive - I never spam my Regen or Aero key to activate them and they're "Instant"s on the GCD. Benediction is not on the GCD and is similarly tagged with the "Instant" cast time but it hardly ever activates instantly and sometimes requires spamming the input for it to fire off.
