How would an optional, official parser be toxic?

[Sigma-Astra]

You are asking things that if even a game parser were existing, it surely does not give you. If you really are asking in game a parser with all that, your only answer is "NO". And you need deal with it.

SSS tells just you have the numbers to reach the kill and it is only a starting point to pass before starting the real fight. All the mechanics handling and everything else, you just have to do the real thing.

SSS tells you that you are good at wacking something while standing still with an over-inflated health bar compared towards the real thing. It's not a good indication. A person could clear the o8s dummy flawlessly and actually struggle to even see enrage in the real fight.

Calling out that others simply need to "deal with it" is one of the poorest arguments to use since the other people on the other side of the fence can simply just call out and say people against parsing need to just deal with it when it's official.

FFlogs gives you a database to compare towards people who have bested the fight in how many times they've used a certain ability, when and where it was used, how much healing they were receiving, damage they were receiving and dealing, as well as any buffs or debuffs. The list goes on, SSS is not a good enough indicator. It merely just tells you that you did your rotation correctly.

It's ignorance like this that breeds unnecessary fear mongering with parsers.