I don't mind shouts nor shout conversations.
People talk.
It's a MMORPG.
What did you expect there is always going to be a dose of brainless bickering/shouting.
Adapt.
Sometimes friends are made from those shouting conversations.

What drives me nuts are the "good samaritans" that feel the need to make a 3 line macro shout for people to be aware of a stupid search engine that nobody bothers to use/cares about.

Other than that. I'm good with shouting.