Would you like an in-game parser?

[Taika]

In older FF you train to pass a fight without a parser too right? So why now it would be impossible.

In older FF games beating a fight wasn't about your DPS, so a DPS parser wouldn't have helped you. They were also single player games, so you weren't accountable to anyone else but yourself, and no one else was able to prevent you from winning. FFXI did have enrage timers, and parsers were used in that one.