In FF, you can initiate a kick if the person is not up to par. The game will not punish someone for asking what's going on, stating facts that contain no insults (Whm, why are you not moving out of the AoE?) but it will punish people for all the unnecessary comments they make while pretending they're "just helping" like (wtf whm?? Why are you so bad?)
I understand, people get frustrated but they're too quick to pass judgment.
What is "Bellular?" If he's one of those "streamers", why is his opinion important? If it's that wrong, more reason not to watch.
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It exists to stop people who clearly cannot compose themselves or have anger issues from bashing on people who don't play the game all day long. If those people are so upset about it that they're taking it to discord, they have deeper issues.
The toxicity of it's community is subjective but I've posted on many forums for both and the official forums and subreddit for FFXIV are way worse than WoW. I'm currently a FFXIV player but at least on the WoW subreddit, new or inexperienced players can ask questions without being berated.