I haven't read everything so forgive me if my answer is off in a way or another, but enrage timers currently (except in week 1 last fight of the tier, some current ultimates or abyssos fiascos I guess) are exceptionally forgiving. On top of it, more and more is designed around encounter mechanics based around body checks, so what gates progress is mechanical execution and solution rather than enrages. Enrages still have a little use when people get to a prog point where they essentially managed to get through all the body checks of the fight, but still had deaths here and there enough not to meet the check.

If anything enrage timers were a lot more relevant in the past than today.