I think it's just that there's been enough time and the magic has worn off. People used it enough now and everybody has made their experiences. They initially were so transfixed that they didn't question the responses. Now people are doing that more often, and realising that likelihood of cooccurrence isn't a good measure for factuality. We've realised that the number of human jobs where it can reach 8%, let alone 80% of quality, is vanishingly small.