Hmm not really negative, it's more along the lines of:
Binding Coil and Second Coil is 2013 and 2014 era content and in terms of vertical progression, much like Wanderer's Palace Normal, we shouldn't be doing it anymore at all in 2016. So while it allows non-raiders to get it, having a job isn't really a point because I was working 2 jobs, one of which had projects that went on for up to 16 hours every now and then and I still managed to clear and farm them in their prime.
The main problem is, you do Turn 9, it drops gear and it drops the tome to craft the gear, so essentially..you may as well should just farm the content for the gear and be on your way, adding in the tomes and music sheet just pushes us back into content rather than make new content.
Lore wise, the gear should exist in any Allagan Hotbed, meaning they could have EASILY added some content to Azy that dropped the tomes, or even a vendor there, or hell as I said, tossed it into Diadem in order to draw SOME appeal to that content. Anything. Just throwing it into the turns you get the gear doesn't make sense at all, since you're still basically piggy backing on those of us who can clear the content. So if they're treating the tomes as a "token" it should have worked more like Savage Alexander tokens:
Basically get 1x token of (insert) for every clear which you can then exchange for a piece of gear based on that token you gathered, similar to newer primals. See? Nothing negative, just a wasted opportunity for them to do something new/unique. If they wanted it to be crafting related, the materials should have been spread out, not from the content that already drops the gear.