Sorry, I won't discuss any longer about those basics, if "Kill yourself", "You're retarded" and "What a fucking loser weirdo" would be within the forum rules. As linked above the rules say
you can say anything as long as it is relevant and presented in a calm and polite manner. Further someone created a whole
Bitcointalk forum etiquette. Ban and delete are the only appropriate actions in those cases as the here reported one, not to talk again about the repeated abuse in advertising an unregistered exchange over 45 threads and a time period of four years. If this is gonna be normal then the trolls will take over the forum and we can say goodbye here!
You're approaching this from a weird angle. If the post contains only "Kill yourself" - it's zero value post and can be removed as such. If there are 45 threads about the same thing - report them as duplicates.
However if "kill yourself" appeared in an otherwise acceptable post, or if the 45 threads are not duplicates (e.g. theymos also runs weekly ad auctions - perfectly fine) you won't get them removed.