Ultimately you choose the path that is right for you here. If it doesn't feel right to you then don't do it. I will not force anyone to use their account a certain way if I can at all avoid it. I believe good ideas don't require force.
Instead I try to explain to them what their actions are doing, and hopefully some of them will change.
You also can choose who you follow. If you encounter someone that you think is acting poorly for the betterment of steem and the community then try talking to them. If that doesn't work then not following them is a good step, and if they are a witness remove your witness vote from them. Really removing their support mechanism is something we can do.
How do you remove support from a witness?
If you haven't voted on a witness you don't have any to remove...
Here is a post I wrote about witnesses 4 months ago:
https://steemit.com/witnesses/@dwinblood/voter-responsibility-know-your-witnesses