I'm not qualified to speak with any authority about this issue, but my opinion is that people that are willing to shoot other people most likely have other incentives than reading a singular's dude online hate ramblings. The problem lies with the fact that they gets ostracized and _all_ they are able to read are the hateful things. If you go through the thread above, you'll see that my stance is the complete opposite of that: let's allow people say the "bad" things and balance them out with other peoples' "good" things.
This theoretically would ensure that this person is not exposed to only hate and negativity, and will hopefully make a better decision than ending others' life and their own.
Forcing this unbalanced individual to retreat into a corner of the internet where his opinion on other people goes unchallenged is unquestionably A BAD THING, and I doubt I'll change my mind on this fact any time soon.
"and I doubt I'll change my mind on this fact any time soon"
You have high hopes of people changing their mind when presented with new information, except for yourself apparently
More importantly I don't think most people over a certain age change.
On another note I'd go as far as to say that prohibiting it will make them even more radical and entrenched in their beliefs, germany has extremely strict anti-nazi laws and yet never stopped having neo-nazis, much to the contrary[0]. The people who are going to go as far as real life actions will find the daily stormer or whatever other website and now he will feel like a martyr and justified of some conspiracy or whatever.
[0]:https://www.theguardian.com/world/2022/apr/06/german-police-...
https://www.wired.com/story/pittsburgh-synagogue-shooting-ga...