Third-party Tools Can Negatively Affect Players Not Using Them

[ForteNightshade]

Do you even do savage content? If you think you need to be optimal I highly doubt it. Enrage is not that severe. I doubt you even leave limsa lominsa, known erp diddler

Do you? Because a quick glance says otherwise.

Nevertheless, it all depends on your aspirations. A group trying to clear week 12 can get away with sloppy rotational mistakes or several deaths provided they don't cause a snowball. People aiming for week 1-3 have significantly less leeway. Especially week 1 where enrage is a real factor. Even in the later weeks where gear carries you, playing more optimally allows for mechanic skips which, in turn, makes the fights easier. Nobody is asking for perfection but if you're a Sage spamming E.Prog on every single AoE, you're essentially forcing everyone else to compensate for your refusal to play your job properly.

[PredatoryCatgirl]

Even in the later weeks where gear carries you,

This. You can improve your gear even without clearing savage at all. By the time the odd patches roll around, its possible to almost totally kit yourself out in savage level gear without ever clearing one. It won't be optimal, but the difference will be negligible.