If a player is excessively talking and doesn't obey admins telling him/her to be quieter, then yes, a muting is deserved. However, this kid barely said anything; I think he was only in there for a couple rounds before being muted. Add on to that the fact that you're spamming the mic more than anyone else and I can see how people could take it the wrong way: "the admins can talk all they want but we can't?"

All I'm trying to say here is that admins shouldn't spam the mics and then mute others for spamming the mics.