@notjustbikes seems perfectly reasonable to me.
This is their experience that they are crafting. Why in the world should you be able to intrude like that into their experience?
This is about respecting users' abilities to make of the service what they want.
And by the same token you have every right craft your experience by blocking such people, or you should in a functional system. The UI should not force them on you, but you should not be able to force their UI to exclude you in a list like this.
Empowering of users goes both ways.