I could say the same for dps: I was taught that they should control their own aggro 100% of the time. If they don't, it's their fault. As a BLM I hardly overaggro and I do quite a good job thanks to "certain ways".
But serious talk here for a moment, no trolling no snarky comments and to prove it I'm using my main so I'm not hiding: mistakes happens and that is a rule of life and as I said before, let's assume I did something wrong (I don't honestly recall but I don't think so and If I did, I apologize in advance): they had no right to blame me like that. I wasn't bothered personally because hey, this is an mmorpg and frankly I expect nothing but awful people from them, FFXIV included. However, considering I asked them to be a little slower ("Let the tank finish the first aggro rotation maybe?" were my exact words), I don't see why they couldn't have done it earlier.
Still I tanked in this since 2.0, where Warriors were "bad", I have 2 tanking mounts, 3512 dungeons completed, 12 coils done (I never cleared turn 13) a Zeta Relic from ARR and completing the new one before the expansion hits, so I can safely say that I know what I'm doing. Sadly, mistakes happen and there might happen a moment, a single moment in these 4 years I played here, that I can commit a mistake and boom such as, I dunno, popping a wrong cooldown or using a wrong skill or anything andsuddenly my aggro is badly done, resulting in someone dying because of it. It's fine, "That is life" as you said and I am ready to apologize for said mistake: I have some dignity and I consider myself humble enough to say sorry when needed.
However you are saying there are no excuses? That a tank cannot do a mistake whatsoever? That a tank is obliged to always do his/her job correctly or they get the beating? That implies an elitistic behaviour and considering the amount of people who tell me that the people in here are "friendly and very reliable", you aren't exactly showing it.
If the guy who overaggroed simply allowed me to just hit with skull sunder at least once, or even finish the rotation, he would be fine but he did a mistake on his aggro. Should I've done better? Maybe, but considering nobody else did this I assumed they were chill. Could've taken aggro faster? Well yeah but it's not always required: I just finished another run of Sohm Al as I write this and I had no issue with aggro whatsoever and they were all well geared (at least 250-260), but hey sometimes mistakes happen and I'm okay with that. What I'm not okay is how a simple mistake automatically assumes you to be a bad player.
And the fact that, according to you, there's no excuse, still implies that the community is, unfortunately, quite toxic because if people were more lenient and actually patient and more flexible, the worst that would've happened was him apologizing for calling me that, I would've said the same, and we'd move on. But instead that did not happen and it only got worse. I may have pushed myself a little too far on reporting however It was unacceptable to treat me like that because of a mistake that I still believe it wasn't on me. I didn't want to end this way but it did.
And yes you might be correct: not everyone is toxic and I can agree with that but only partially, especially considering that in nearly 15 years of mmorpgs (I'm 27) in games like wow, tera, aion, swtor, ragnarok online, pso...I lost count now, I never had issues with other people in most of the other games: the only exception is GW2 which even lead to me quit for how toxic it was (we're talking of death threats to other players kind of bad).
And to be fair, I can judge how I want as long as I don't start bashing or offending others: I can have my own opinion but as long as I don't push on others, why should they care? It's my opinion that the community is "less than stellar", but beside the forums it's not that I'm going online and putting it on a PF and saying to all my server. For all I know you might despise me right now but as long as you don't go on my server and tell me directly or start harassing me, why should I be bothered?