I can't really tell whether you're belittling him or not in your post. Regardless, I'd like to point out the foolishness in criticizing Fischer. When someone criticizes Fischer, they are saying that they know how he could have lived his life better. But this is absurd since they would never in a million years be able to take on the top tier in chess single-handedly and then win the world championship, or meet any other challenge of comparable difficulty. Thus they can't back up their own criticism, and this makes them look foolish. This argument generalizes to criticizing any hero of any endeavor. It's different if they're Jack the Ripper, as one's criticism in this case would be grounded, but Fischer never harmed a fly with his remarks, however bad they are.
Note that since I don't know whether you belittled him or not, this post is not directed at you. Your post just made me think of this.