I'm not sure why you think farming was nerfed. I've not heard of this happening. I still actively farm and I've not experienced this "nerf" at all. Perhaps you're just bad at it?
Yeah I'm not entirely sure what he's talking about - from what I distinctly remember around 2011~ farms increased relatively the same as they do now. You could get every piece of grass with a face value of 1 or 5 and then get bad luck and take forever to reach 50/100 etc and vise versa, you could take forever to get the initial farm setup and then get 50/100 much faster, all dependent on RNG. Back then there was also exploits to get multiple gralats on one piece of grass which a lot of people did.
Also you probably shouldn't say you'd give back the new guild system in a heartbeat in exchange for the old one, when we haven't even seen what the NGS fully is going to be yet.