The reason the parser is even a problem is because of design choices aped from games that encourage the use of it. Reality is that FFXIV has no real decision structure to anything when it comes to content, even savage. They pushed the entire design into simply being an arms race to kill the boss the fastest, which encourages specifically rotation optimization on damage over any other role or function such as healing, evading, doing side objectives, etc. The only times where they can even manage something besides a dps race is with weird mini-game segments like High Concept and Levin Strike, where the boss can't be targeted by anyone.