Fair. The fact that Google exists + the fact that Google serves a huge amount of traffic + the fact that Google is unable / unwilling to filter out content farm

Fair. The fact that Google exists + the fact that Google serves a huge amount of traffic + the fact that Google is unable / unwilling to filter out content farms = incentive to content farm. If there were no Google though, we'd likely have the same thing. So I guess the only reality that avoids incentivizing them is one where (1) there is a massive traffic generator & (2) that massive traffic generator severely disincentizes content farms.