Well this specialization system won't cater to casuals because it locks them in place when someone has the market they are in on lock. If someone is controlling the market they are the ones making gil not the wait and see people. So this system is only screwing with the hardcore by making alts to compete with the others that also did .
And the main reason alot of people never got into crafting was they had to level 8 crafts for the cross class skills but in the interview it sounds like you still have to level them all and then specialize. That's not very casual sounding to me.
If was only for airship building or so people can make unique / untradeable stuff I wouldn't have a problem. Or maybe I can max out a specialization get the recipes then on to the next one would be OK as well but deep down that's not going to happen. They want less items in circulation but they don't care about the price hikes that's going to happen.