I didn't say it's hard to use just one character but it's simply much faster and easier to use multiple characters. 700 k is not a lot, I probably made much more than that but sank them in skills.
My point is by design we actually have an advantage if we use multiple characters. I didn't say it's a necessity but why make 20 k off a WO when you can make 40, 60, 80 k or more from the same work order done on few alts, crafted by one toon. It's much easier and faster clearly-I'll craft 60 great melee staves and distribute them to 3 toons, do it 3 times cause why not. Get where I'm coming from? I don't want to rush content and choose not to do it (others do too) but it's available and very advantageous.