The assertion that Wikipedia has more content than it did in 2004 is also logically void.
In it Charles Schneck was convicted for an absolutely abhorrent crime. He sent out fliers to men drafted for WW1 informing them of a legal defense against the draft - of it constituting involuntary servitude, which was prohibited by the 13th Amendment, and encouraging them to consequently assert their legal rights and work to resist the draft.
For this, he was arrested and put in prison, with the government claiming that his mailed fliers were akin to 'shouting fire in a crowded theater.' This is why free speech means free speech. Limitations are invariably weaponized by authoritarian forces to shoehorn essentially everything into that limitation.
[1] - https://en.wikipedia.org/wiki/Schenck_v._United_States
The quote is literally part of the government's [successful] argument that their right to imprison somebody for shouting fire in a crowded theater naturally grants them the right to imprison somebody for handing out informative fliers that run contrary to warmonger interests.
There's no stronger argument for free speech means free speech than the quote you chose.
What about the speech of "I will pay you $50 to stab that guy right now"? Constitutionally protected or do you believe that should be past a limit?
Not only does this prevent trampling on speech and minimize abuse, but it's also far more to the point. Because why is shouting fire uniquely awful while shouting penis is just some kids being annoying that should simply be kicked out of a theater? It's not because of the words obviously, but because of the consequence created.
I think it should be illegal to spread Nazism, but Nazism is spread using speech so people keep telling me that would be a first amendment violation.
The paradox of tolerance is largely nonsensical, because the key to a free society is free speech but stringent, and blind, enforcement against actions. Somebody can larp out with their swastikas and roman salutes all they want, but the second they lay hands on anybody - they're going to have a few years in a cage to rethink their life decisions. If they repeat this onto a third time, the key gets thrown away.
In general I think that the liberties of the worst of society work in many ways like a canary in the coalmine for the rest of us. As soon as that canary dies it's not long before your government, with its 29% approval rating, is trying to do things like ban the highest polling party in the country under ridiculous mental gymnastics that, in reality, come down to little more than 'we want to stay in power.'
In this regard I also think hate crimes miss the mark, because is something like 'the knockout game' a hate crime? Probably not, but I think it should be treated in a similar fashion because it's essentially the same problem - of some ideology driving somebody to violence, as opposed to a normal personal conflict.