"Future battle design may cause difficulty with casting spells"

[Carighan]

Even if casting spells would become harder, why would SE remove BLM's timers? They could just give the job more instant casts and decrease the cast time for Fire IV, and yet they didn't stop at that. It's clear that those changes were made to simplify the job for the casual FFXIV player. Once again, the intelligence of the community is underestimated. Most people know what's actually happening.

Factually wrong, there were already near-optimal all-instant rotations for BLM before. You cannot give more instant casts any more beyond "100%".