Well, that, and charlatans like Rossi carrying the flag.
I certainly have doubts about Rossi, but MIT lead a very concerted FAX and internet campaign to discredit Pons and Fleischmann starting just a few days after their announcement back in 1989. I was a full-time student back then, and I remember. Physics professors at my school were being "lobbied" to "oppose" the results of Pons and Fleischmann. I thought it was very strange behavior at the time, and in hindsight it only seems more shameful.