No, or they would get fired. Blizzard records every single thing that the staff do and have an IA department that can review any violations.
Not agreeing with you does not mean someone is a GM alt.
Did you need assistance with something? Or maybe clarification on what a GM can actually help with?
https://us.forums.blizzard.com/en/wow/t/spotlight-on-game-master-help/11354/7
Edit for copy link failure on my part!