Manly miner and lumberjack here. Not worried about this at all, in the least. Highly doubt they'll be hauling in stacks of cobalt or anything. Probably just come back with some brimstone and feathers. Then people will get sick of getting a bunch of -1 inventory space junk to npc and have their retainer slaves do something actually semi-sorta-useful like water the plants or feed the chocobos.
I get not having faith in SE to not be extremely derp about stuff, but it's pretty hardcore crazy to think they're so dumb that there is any real chance that they'll turn our storage servants into gathering class killing robots while also doing an expansive overhaul to all the DoL jobs...and what-the-heck-ever else this major overreaction of a thread is about.
No disrespect, of course, fellow gathering comrades. /salute