Question about a person being silenced

I completely understand that if someone breaks the rules they will be publicly silenced, but it seems a bit extreme to me that silenced people can’t talk to their friends on battletag. Aren’t these people on their battletag because they’re friends, which in turn would mean they would want to be able to chat with the person, even if they’re publicly silenced?
Could I petition that a change be made to silences, that allows them to chat on battletag?
Thank you.