@roka @boob @Moon you do not become famous by solely inventing something, you become famous primarily by presenting yourself and your invention to your community in an acceptable/digestible/useful way and secondarily - random circumstance. If it is an issue, it is an issue with fame and recognition in general not Einstein. It is an issue with Einstein specifically, only if you consider him a prophet of a rival deity, which is a delusion irrelevant to the community en large.
@boob
For the purposes of this discussion I'm accepting your premise. He might as well have been so dumb as to render him incapable of expressing thoughts in any form. For a rational person this would be but a minor curiosity, yet another "victim" our natural tendency to create heroes and idols out of thin air. However for someone who is in that game of heroes and idols with political/ideological/religious agenda, this would be grand revelation, worth not only all the research and proof they can master, but also (why of course only just a pinch of) speculation.
There are no greater minds, there are just minds that happen to stumble upon something in a way that others happen to recognize at the moment.