From what I can tell, that's not unique to the lemmy network.
I guess being loathed and having an indifferent at best reaction to your murder is one potential negative consequence of participating in an industry that that devalues human life in exchange for profit as a matter of course.
Just like on Reddit, that depends on the moderators of the sub/com. It really couldn't work any other way. .world seems to often err on the side of being inoffensive for the sake of broader appeal. (And probably also not getting in hot water with their hosting partners, acquaintances, etc.)