His speech explicitly demands the Vice President of the United States reject the election results.
He's laying out the national-level horrors that ensue if the VP does not. Stolen election, illegitimate President.
He's saying those horrors can't be allowed to happen.
We convict mob bosses for murder on less explicit statements than this.
Perhaps not. But if you [the politician, not the parent commenter] are socially aware at all, you ought to be aware that your words are going to be taken that way by some people. "But that's not what I said, and not what I meant!" Fine, but then you're clueless rather than criminal. That's still not president material.