I think when I jokingly say that "of course Picto is better" is that you can notice how Picto is one of the newest jobs in the game, and has a huge mechanical headstart in that by now the devs have finally understood that just having 20-30 buttons means nothing if there is 0 depth in the combat gameply and hence you might as well have auto-combos for them. Less RSI, same mental involvement.

Meanwhile BLM is one of the oldest jobs in the game, which also got evolved by simply stapling more and more stuff onto it each expansion on an extremely outdated core. It's useful, but also you can feel retro feeling, constantly. So we're comparing a pure-DPS job that is utterly outdated in design and also heavily overloaded with ideas while each individual one is severly undercooked to a job that has some utility, equally hits hard, but is also super modern, refreshingly flexible and allows you to focus on the gameplay over the UI and hotbars. It's an unfair comparison, in particular because both Red Mage and Summoner have evolved since then, while Black Mage only gut further bogged down.