Who is harmed specifically by online speech? Speech can certainly lead to people deciding to take some kind of action, but that action is what harms people and those actions are very likely already illegal.

When it comes to separation of powers, that's a much bigger discussion but I have concerns over how our three branches operate in the US today. Our legislative branch has outsourced much of their power to the executive branch, though the overturn of Chevron may eventually help that. I wish it were as simply as voting, but I'm generally only offered one or two options for most elected positions and when it comes down to it neither party will allow anyone on the ballot that wants to actually reform anything meaningful about how the system works.