I think you misunderstood me a bit, I am all for crafted gear to be par with raid gear or mythic gear in level and in stats. There should be zero disconnect, if you invest the time, the money and the effort that crafted (insert piece) should be just as good as a piece that came out of a raid. The costs and efforts to make these pieces should be worth the time and effort no less than the person that is going week-in/week-out into raiding, the issue made before was the "Why" do you need really powerful gear if all you are going to do is anything (everything) that isn't raiding. This is a flawed line of reasoning, you didn't really need the most powerful stuff to kill bosses in the first place...so why do you need it at all?
Also in regards to Naxx...if you are speaking of naxx 40...that was a different time and not the same game. If you were talking about WoTLK Naxx...still it was still the same tier along the same route, you didn't need anything but comp gear to do the fight alone, much more powerful gear would make things easier of course, which is the point of all of this...more powerful gear makes "ALL" content easier and faster, not just some things ALL the things. It benefits all the content to have players able to have powerful gear available from multiple outlets. The base of people wanting to do raiding, but didn't have gear for it (since there is one road) will now have gear ready to take on a raid. I hope crafting becomes just one more option people can do to get quality gear to join that raid or the M dungeon or whatever challenge.