That hasn’t been something they’ve done in many years.
Here’s some old posts from Mirasol on how things work with GMs:
They are not allowed to give game hints, they can’t fix individual accounts that experience bugs - with RARE exceptions, they can’t grant loot that is not backed by logs, they can’t grant achievements, they can’t reset raid IDs, etc.
When you ask for something they can’t do, the generic reply is to check Wowhead for how a quest works/item works/boss drop works, etc. If it is a bug you use Bug Reports in-game or the forums and have to wait on a Dev fix for most things.
If you got told that they were done with that particular issue and could not help - then you really pushed it to the point the GM had to tell you that “no” means “no” and that is final.
You can always come to the CS forum which serves as an Information Desk. Folks there can help someone navigate the Support system, knowledge base articles, explain services, policies, etc. It can prevent a lot of wasted frustration and time on the part of the player trying to get help, and the CS folks taking tickets. At least you would know up front if it was something you should not waste time on ticketing for.
Blizzard has never allowed GMs to give what they consider game hints and GMs don’t take bug reports. Those go to QA. So if they think the ticket is asking for one of those two things they send a template with guide resources or point folks to the bug report channels.
Not saying I agree with it, but that is how Blizzard’s GM team has always worked. If it is not a very specific bug the Devs have told them they are allowed to touch, they can’t.
They can’t just fix everything customers want fixed, as nice as that would be.