I agree that trying to make statistical arguments to someone who isn't capable of correctly interpreting the statistics can be harmful.
However, I disagree with your original claim that `Not all subjects are amenable to "rational discussion"`, since this is not independent of with whom you are discussing a subject. I am fairly sure that for any possible subject, there is someone you can rationally discuss it with, without causing any harm.
> you're arguing that saying "this discussion is harmful" is itself a harmful discussion!
I don't interpret Sniffnoy as calling the discussion itself harmful, rather they thought you were the kind of person who'd advocate preventing harmful things; thus they argued that a policy of suppressing "harmful discussion" would be harmful. (As opposed to just discussing such a policy.)
If you are not in favor of suppressing harmful discussion, then the free-speech issue also becomes moot; if it's just you saying "I really don't like this discussion." then that's an opinion you are entitled to, but everyone else is free to ignore it.
However, I disagree with your original claim that `Not all subjects are amenable to "rational discussion"`, since this is not independent of with whom you are discussing a subject. I am fairly sure that for any possible subject, there is someone you can rationally discuss it with, without causing any harm.
> you're arguing that saying "this discussion is harmful" is itself a harmful discussion!
I don't interpret Sniffnoy as calling the discussion itself harmful, rather they thought you were the kind of person who'd advocate preventing harmful things; thus they argued that a policy of suppressing "harmful discussion" would be harmful. (As opposed to just discussing such a policy.)
If you are not in favor of suppressing harmful discussion, then the free-speech issue also becomes moot; if it's just you saying "I really don't like this discussion." then that's an opinion you are entitled to, but everyone else is free to ignore it.