Why the hate with endgame fights?

[Shurrikhan]

And like i said the trend started with those players which led to the attitude that still exists today.ie being toxic to players over gear/dps parses,failing a mechanic.When people act toxic in this way it starts a trend and then becomes a norm unless something is done about it.Se have tried to address the issue by nerfing content or buffing jobs but this is and always will be the wrong way to approach it.I havent ignored anything you stated.

Nerfing content and/or buffing jobs has never been given as a solution or even as mitigation to "toxicity" derived from people attempting content they are unable to do within nearly the expected span of learning time or under the criteria under which they accepted recruitment.

Expressing frustration and making decisive cuts over people failing to hold their own as promised in throughput or mechanical performance is far from being "toxic". And the standards for wanting to actually finish the content as specified, with a party matching the requirements you expressly listed, is hardly an 'immigrant taint'. You can't just blame people being held accountable to some misguided carryover from other MMOs.

The only thing that has increased with time are conventions built around the tools to increase player quality of life. We now can more easily determine who's holding us back, and, if need be, replace just them instead of disbanding, reforming with new players, wiping over another weak link or two, disbanding, reforming, repeat, repeat. That is quality of life increase. And perhaps if more people would hold themselves accountable to what's expected of them, or make their own parties fitting what they are actually willing to do, they'd force far less conflict.

Tl;dr: Don't blame the immigrants from other MMOs for the most basic reasons for conflict (poor communication and/or broken promises), and that conflict running its due course. They are not the reasons for toxicity, nor, in any event, are the conflicts you're talking about toxic on the part of those you're accusing.