Stalking one particular person, especially if they can't block you etc, is something different if their goal is to physically harm that person. If they are being big douches, regardless of what they say, shouldn't be subject to government regulation.
And people shouldn't be so sensitive to the shit people say. Especially when it's some random asshole online.
But I fully understand your approach.
If you don't feel repressed by a reduction in your free speech, regardless of what that speech is, then you are a part of the problem.
The government should not regulate what you say. That's not their job.
But then again people want government in every aspect of their life so your approach to this isn't surprising.