Take a step back, and adjust.

[Maneesha]

Those complaining things are being adjusted to things being too simple for tanks/healers, might want to also try considering things from the new player perspective. Consider how daunting it becomes for a new player that wants to try playing a tank or healer, once they find out the expectations is being able to grab 2-4 encounters at a time in most dungeons, and not being able to due so thanks to being new.

Making jobs simpler and people having anxiety of tanking/healing are completely different things.
1. They are afraid to make a mistake and cause a wipe and hear people complain. At least when they hear that the norm is 2-4 packs, they know what to aim for. Also we play the game this way because of the encounter design and game mechanics designed by the dev team.
2. Making classes easier for newer players is a mistake,imo. You "might" get a few new players to play them, but they will play them because they like tanking/healing/dpsing, not because its now easier (sure there might be a few that will play them because they are easier). What about the existing players?While you might get a few new ones to play those classes, you lose existing ones, because they got bored or disliked the simplified version, so you gained nothing...

Really i am sick of hearing the devs always talking about making things easier for the "potential" new players who might not even want to play those classes and completely disregard the existing players. Is a higher learning curve really that bad? Do they think the new players will be dumber then the players they already have, so they have to simplify things for them? Don't the existing players deserve to expand on their knowledge,skill and be challenged with their class because the dev team added more to the already existing mechanics,instead of removing them...

Sorry about the rant..
Also don't worry, people will adjust or they will switch classes or play another game :P

The response from the hardcore elite players is disheartening, to say the least. I would have expected some understanding especially since OP's posts are put very eloquently and comprehensively. Seems only natural to reply respectfully as she was.

Also, I do consider ex trials end-game content, seeing as how the only other content that's harder is savage raids

Welcome to the forum/internet. Where everyone is a pro and farms "likes" with "cool" comments, like this one

[Hawklaser]

Making jobs simpler and people having anxiety of tanking/healing are completely different things.
1. They are afraid to make a mistake and cause a wipe and hear people complain. At least when they hear that the norm is 2-4 packs, they know what to aim for. Also we play the game this way because of the encounter design and game mechanics designed by the dev team.
2. Making classes easier for newer players is a mistake,imo. You "might" get a few new players to play them, but they will play them because they like tanking/healing/dpsing, not because its now easier (sure there might be a few that will play them because they are easier). What about the existing players?While you might get a few new ones to play those classes, you lose existing ones, because they got bored or disliked the simplified version, so you gained nothing...

Really i am sick of hearing the devs always talking about making things easier for the "potential" new players who might not even want to play those classes and completely disregard the existing players. Is a higher learning curve really that bad? Do they think the new players will be dumber then the players they already have, so they have to simplify things for them? Don't the existing players deserve to expand on their knowledge,skill and be challenged with their class because the dev team added more to the already existing mechanics,instead of removing them...

Sorry about the rant..
Also don't worry, people will adjust or they will switch classes or play another game :P

Its a funny balancing act isn't it? You need things with the higher skill cap for the more experienced players that may be looking for a challenge, and others that have a higher skill floor so that the new players can acclimate and perform well enough to get through things.

On point 1, I found most groups willing to adjust to the parties capabilities. But every now and then, get the stubborn ones that try to fit a square peg through a round hole, and decide to blame the hole when that doesn't work.
On point 2, it really depends on why the class is getting simplified. Some were getting a bit bloated, like Drg in my opinion.(Haven't tried it in Shadowbringers yet, but by the end of Stormblood it just felt bloated and was getting clunky to me, while I really enjoyed it in the past)