I think people take the greyed out comments and post issue to serious. There was an individual that had all of his comments greyed out. It did not stop me from being curious as to what they said and looking at the comments. It was just a simple click to see the comment, most of the comments were relative to the post, I asked why, I was told, I gave my opinion, and the person's comments are no longer greyed out, I am pretty sure I did not persuade anyone to change their mind, but I spoke up. Even if they did not stop the auto down voting of this person I still would have seen each and every comment of his if I saw his name I would just ungrey it for myself.
On the other hand there are comments that are greyed out that I will not bother to look at, these are from disgruntled woe is me types, or spammer accounts. So the auto down votes do not bother me, people can still look and still see the comment. It is just a click away after all. I do still look on occasion to see if they have changed their ways and if they did then I will look at their comments and post also.
If a person is concerned that someone they follow is being censored all they have to do is look at the post. They can resteem it so others that follow them can see the post. They can make a post and then put a link to the greyed out post. There are ways and means to remove perceived censorship on the Steem Block Chain.
If they do not like the fact that a tribe or a community has blocked/muted a friend then they can always still use the steemit front end. Unfortunately if they did that they would have no reason to play the woe is me I am a victim card and try bullying others to get their way.