I'm gonna say something unpopular: I don't like to rush.

[BadLala]

Honestly nobody owes their party an explanation for their limitations. The expectation is that you play to the best of your abilities and the content gets cleared.

If someone knows they have limitations and decided to not let the party know, then as you said, they shouldn't be salty if they got kicked out of the party. The expectations however, those are set by the player base. I've said that in a previous thread that got deleted. If a content is done by a large part of the players in a certain way, this will set the expectations of the players doing it. For example, doing a dungeon usually takes 15-20min. No one queues to the dungeon expecting they will stay the full lockout. But doing BA on the other hand, you know you'll be staying for about 2hrs from forming the groups until it is cleared.

So as for pulls, I rarely see a group doing expert with one pack at a time (except for week 1-2). And what drove me to think it's something a lot of players can do, is that I can do it and I'm a really bad tank. I don't even know my rotations nor did I even bother looking at them, since I don't play tanks in raids and trials. I leveled my tank mostly doing PVP. When I tried my luck in leveling roulettes, all I do is click any attack button I see that is an AOE. And before pulling, I just click a defensive cool down. And it seems that it worked fine for me doing two packs. I did wipe a couple of times, but when I asked the healers if it was something I did wrong, they said they weren't comfortable doing more packs so I did one at a time in those runs. So I'm pretty sure my play level is way below the average tank players. And this is during SHB, not SB where tank stance affected your DPS. I have mad respect to the tanks that can dish out massive DPS while holding enmity. I know for sure that I wouldn't be able to do that.

I understand your post is from a place of wanting to understand and I hope someone answers so you do. However trying to "fix" people is a little narcissistic. I don't think making others play like you should be the goal. At best you should just be trying to find people who already play like you and stick with them.

It's not "trying to fix people", it's trying to help them fix something they consider an issue that's preventing them from doing something that may very well be within their capabilities. Like for example if someone told me "I don't want to do dungeons through duty finder because I meet toxic people". I can easily tell them that they can report any toxic player. They say they have an issue, and I'm offering something that can fix that issue. Because as I stated above, all I do is click a button before a pull. It's not asking for an optimal play of a class. If the fix does require something like an optimal play, then I understand that some can't do that.