Not that I like to butt into battles that aren't mine. But the guy is literally saying you should line up abilities properly and not hold on to them too long you lose on usages. You, sir, have a L2Read problem. Go reread what he said. But since I know you won't, I'll help you.
First of, just because DWT is back up, doesn't mean you have to use it. It has 15s CD, but you can use it once per minute really (because of Aetherflow restrictions). If you didn't know THIS part, then it is YOU who doesn't know how SMN works.
Lining up DWT with Contagion (1min CD), NIN's Trick Attack (1min CD) and if the PLD is good, Requiescat (1min CD as well) is a MASSIVE raid DPS increase. Even if your dear Bahamut doesn't get to line up with Contagion.
Also, please, none of the "x class was so-or-so in FF<enter number>"... Also you're wrong about FFXI SMN being the only "pet" job.. In FFX the Yuna did exactly what they did in XI, summon a "pet" and keep it out there for a while. So did the summons in FFXII work in a similar manner.
Just what do you mean by "non-essential jobs" exactly?... Unless you're talking about CUL or other DoH/L classes, EVERY "job" is essential when it comes to combat balance.
