"Grandstanding" is when someone talks about problems that don't affect me. For instance, if someone says that we should prevent child slavery, that's grandstanding because I'm not a slave. On the other hand, if someone says that whiteboard interviews for engineers are unfair, that's not grandstanding because I'm an engineer.
Also, if I agree with something, then it's free speech and therefore not grandstanding.
Also, if I agree with something, then it's free speech and therefore not grandstanding.