Instead of debating whether the 'ignore' function works properly, just provide feedback on what you want to be able to do. You do not need to give it a name, you simply need to state your use case(s).
There may be problems with creating a true "block" feature for community software like IPS. If you check blocking capabilities on sites where it already exists (I'm specifically thinking about social media) it serves as more of a privacy tool. It prevents others from being able to see your profile content, send you messages or view your posts. That's fine in a system where your content is entirely your own and the only impact is one less viewer of your content, but in community software like IPS this could create problems:
There will be apparent gaps in conversations to users that have been blocked, for example:
Blocked
Person 1: Does anybody know how to install this program?
Person 2: Yes, you install it by double clicking on it.
Person 1: But then I get a warning about it being suspicious.
Person 2: That's OK, you just need to add it as an exception.
Person 1: Thanks
Unblocked
Person 1: Does anybody know how to install this program?
Person 2: Yes, you install it by double clicking on it.
Person 1: But then I get a warning about it being suspicious.
Person 2: That's OK, you just need to add it as an exception.
Person 3: No, don't do that! It's actually infected and a new version needs to be uploaded! Delete it and run a virus scan.
Person 1: Thank
There will be useful topics that might not be seen:
Blocked
How to install this program.
How to open the program.
How to uninstall the program.
Unblocked
Warning: current version infected - uninstall it and run a virus scan.
How to install this program.
How to open the program.
How to uninstall the program.
These are of course just examples I can think of, but I imagine there'd be gaps all over the place.