Not making a big deal is different than explaining yourself. 
 
"Hey guys, I'm deaf so there's no point in me downloading vent" = you probably stay in the guild, and someone is designated to explain important things to you via tells at any raids. 
 
Not downloading vent + not saying anything = guild thinking you don't give a shit. 
 
No guild, no matter how hardcore, has leaders that are big enough dicks to kick you (your friend) for being deaf. 
		
		
		
		
		
		
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