Why the hate with endgame fights?

[Shurrikhan]

Bad players being bad players. Quite literally nothing more, nothing less IMO.

I actually have to disagree with this last point. Early on, XIV faced even more problems with specific ISPs taking incredibly strange routes to XIV's servers (and only to XIV's servers) that seemed to double-up in penalty in regards to AoE zones. Worse still, one could vary by up to some 150 ping just between different instances of the same fight. Their polling rate (frequency of positional checks) was also merely half what it is now.

During Titan HM and later Ex, I had to count down the mechanics by timelog and leave almost a half second early just to leave my plume with everyone else's without dying to said plumes even if at the far edge of the arena.

There was definitely more to that time than mere excuses, and the sheer range and seeming randomness of one's ping was certainly frustration-inducing.

(In agreement)
The weirdest thing, though, was how willing ARR players seemed willing to take all that on the chin, as long as people were doing what they could (such as my finding a way to fight blind). And when the latency got so bad around peak times for my broadband internet (a regional monopoly, with $40/month between my current tier, sufficient for other MMOs, and the next) that I had to quit my static for one playing during nearer the midday, they were entirely understanding.

Toxicity may have been an occasional thing when subbing for statics with their own, very distinct ways of doing things, or in Ex trial pugs, but on the whole ARR was a comparatively friendly community, from what I've seen of it across 3 servers, and most players who came to check out the game from other MMOs were already present in at least their current portions at that time, if not in greater portion (having since moved on during content lulls).