Not exactly. However the system is designed to only let you submit tickets for things CS can help with. They DON’T help with game hints, bug reports, or anything that the self help systems do.
There is a good article to read on what GMs can and can’t do here
https://us.forums.blizzard.com/en/wow/t/spotlight-on-game-master-help/11354
If someone needs help navigating the Support system, the Customer Support forum is an Information Desk that is designed to assist with that. The regulars and Blues can help find the right options, articles, explain policies, explain services, etc. They can also tell you if it is something the GMs can’t do, so you don’t waste your time.
https://us.forums.blizzard.com/en/wow/c/support/customer-support/13
Again, there are no GMs there, it is an Information Desk.