In every game I've ever played, attempts at curbing farming have always been met with the same forum vitriol. Those players always say the same things, and they're always thinly veiled attempts at sticking up for "the little man" when that's not their motivations for being upset. In fact, that angle of attack shows a lack of understanding basic economy. No game I've played in all my years gaming has a reduction in farming efficiency become the "doom" the farmers on the forums say it will. This is a reduction, not a removal, after all.
Now, are some of those players going to quit being "generous" with their money, or start farming less? Yeah, probably -- reactionary players usually do follow through on this kind of threat. Is it going to impact the market in any meaningful way? Not likely, considering there are many more players out there who will just farm an extra hour than usual to make up the difference, incidentally increasing the amount of drops and offsetting the spiteful.
The more things change, the more they stay the same, it seems.