In comments, Pat wrote:

"just you" as in I am not aware of a general pattern of Sarah ignoring people as you claim she is you.

FWIW, I am aware of such a pattern, although the details are private/confidential.

"Are you trying to say [Sarah] views me as a single loony not worth talking to?"

I suppose that is a possible explanation of the behavior you are describing, although I can surmise others.

How about, your logic is so tight and irrefutable that the only what TCS in it's current form is going to survive is to ignore you and hope your reasoning doesn't see the light of day.

Well, if my logic is right, TCS should not want to remain in its current form. Though you've made it sound kinda dire. I don't see why changing the posting guidelines, especially the anti-meta stuff, would be so giant.

Or maybe, it is your style. If someone you knew was just plain harsh and mean and generally not any fun for you to converse with, and that person has repeatedly indicated that they were not interested in changing that aspect of themselves, how would you deal with such a person?

I would ignore the harshness, and interact anyway, if I had some reason to (such as the person being interesting, including uniquely wrong).

And to answer the implied comments about me: I am open to changing any part of my style if persuaded that I ought to. Umm, some people don't think I'm fun to talk to, but I know plenty do, and I don't know a reason to think I have some special status in that regard. I deny being mean. I think being harsh to ideas is sometimes called for.

Has anyone, including those that generally agree with you, ever complained about your presentation being abrasive? If so, did you indicate that you would seriously consider their suggestions or did you indicate that you thought you were and still are justified in such a presentation?

Can't I indicate both? I think I'm right and I'm open to being persuaded otherwise. True and mutable.

Or maybe it is something else, I don't know. I am purely speculating based on the information you have provided so far.

Since you have access to much more information about the interactions between you and Sarah than I, why do you think she is not engaging you?

I don't know why. Wish I did.