This might have been a good call 10 years ago but nowadays Eliezer is participating in regular face to face meetings with skilled mathematicians and scientists in the context of constructing and analyzing theorems and decision strategies. This means that for a large amount of the people who are most important to convince, he gets to screen out all the "evidence" of not having a degree. And to a large extent, someone having the respect of a bunch of math phds is more important a qualifier of talent than having that phd themselves.

There's theoretically still the problem of selling Eliezer to the muggles but I don't think that's anywhere near as important as getting serious thinkers on board.