That's the biggest load of BS I've ever heard.
Here are ONLY 1 star recipes that you can make with JUST weaver (and appropriately leveled gatherers).
Imperial Operative Dalmatica
Militia Tights
Carpenter's Hood
Weaver's Gibus
With only a level 25 alchemist requirement (natron) with low level mining mats you can make pretty much every other 1 star item because of the requirement for undyed felt, which can also just be gathered from maps (also the few recipes requiring darksteel and rose gold nuggets can also just be crafted this way).
Here's a list of 56-60 recipes (you know, the stuff you make to level) that you can make with weaver + gatherers only
Crawler Silk
You're absolutely right, why would anyone assume that when previously you could craft the high level stuff with just the current class (or gathered from maps), that all of a sudden even leveling crafts would require a 50+ armorer, goldsmith, and alchemist to make a single piece of weaver level 59 gear for a level 58 DoM piece. It's always been that way. *rolls eyes*