Lying about an election to mislead voters on election processes (i.e. time, place, and manner) is illegal.[0] "Threats that threaten the public safety or security of the United States" are also illegal. The judge lists several other things that are also illegal, such as malicious cyber activity and criminal conspiracy, so it doesn't seem like that section is intended to contains exceptions to section 8.
> Lying about an election to mislead voters is illegal
The big exception is, of course, the last, which covers any content that isn’t protected by the Free Speech Clause whether or not it is expressly illegal.
Ah, you're right; I think most of that speech (fighting words, obscenity, etc.) is already illegal anyway, but in case there's any that isn't, I will edit that to say speech that's "protected by the 1st amendment".
[0]https://www.fbi.gov/how-we-can-help-you/safety-resources/sca...