Disease or no, SE only have themselves to blame for how things are now.

You have to go back to ARR to see how things started going down this road. Trying to figure out your own personal damage where it mattered in the 8 man content of the time was challenging at best and rapidly gravitated towards being nigh impossible as you went towards the more dot centric jobs.

Scrolling text was vague, various damage types were merged, analysing the chat log was even more useless with imprecise timings and dot damage being omitted entirely.

Picture being a SMN or SCH and trying to optimise things for coil back then. The game simply didn't give players the tools some wanted. Cue third parties coming along and doing it for them. Of course this wasn't hugely important back in Coil because the DPS checks really weren't that steep. Parsing was a thing, but it was niche because most jobs simply didn't need it.

And then Gordias happened. Right out of the blocks even the gatekeeper punchbag Faust was a huge step up over anything Coil had expected of us. And that's before we get to the DPS checks A3S required during prog. I was covering for Solitude's team during the world prog race and hand of pain was unlike any DPS check I've ever seen before or since. Everyone had to bring their A game and as a result, everyone had to either be parsing, or use parser data to get their DPS to where it needed to be to pass that check.

This trend continued abielt to a lesser extent in both Midas and even Creator. Whilst Midas was overall a much more mechanics centric tier, A6S was still a pretty stern challenge and it wasn't uncommon to see midcore and casual groups repeatedly running out of time here during prog. Even Creator which was by far the easiest Savage tier yet enforced a high bar for DPS by way of phase pushes and mechanic skips often being borderline required to clear the fight.

Wether you agree with parsing or not. Just remember who's to blame for setting the standard here.