I would argue this isn't speech any more than saying a phrase to Alexa that causes an API to be called which then detonates a bomb is speech.
I define speech as expression of ideas. Basically, say I maintain a blog. Should there be limits on which ideas I'm allowed to express on that blog? Should I be thrown in jail if I express a "bad" idea?
Aren't Al Quaeda and ISIS websites shutdown all the time? If ISIS was using 8chan to spread Jihadi propaganda that ended up leading to killing on US soil, they'd be shut down quick. But since the extremists belong to a political side, it's called free speech. When Twitter/FB/YT/Reddit remove such speech, it's spun as political bias.
Ironically for your argument, Cloudflare hasn't really shutdown any alleged ISIS sites. This was even noted in their first blog when shutting down the Daily Stormer.
If, say, you're aware that your readers have a tendency towards "exuberance" when it comes to dogpiling / harassing / doxing / etc. people you call out on your blog and your "bad" idea expresses a wish that someone has a very bad time of things, yeah, you should definitely be looking at consequences (perhaps not jail-level, mind) for that idea.
(cf people like Gervais on Twitter who have a consequence-free dogpile mob ready to relentlessly harass anyone criticising them. Or POTUS, in the current instance.)