You don't understand so I'm going to attempt to explain it to you.

Go speak to the local leve npc. Notice the options. You have level 10, 20, and 40. All crafting leves from 20 through 35 are offered in the 20 section. Because the system is this way for crafting leves, when you have a leve that randomly can be a level 20 or 30 leve a good deal of the time a level 30 crafter will end up with leves 10 levels below them to do and nothing more. This has been a problem since beta. Rather than adding more crafting leves they clumped them all together to give the illusion of more leves than there actually are for crafters.

That is what he was describing. And he's right, about that at least.