Of course your comment makes no sense at all. Why would someone fake a serious illness, easily uncovered to do something so easily accomplished in other ways? By the way, I don't think any person with an IQ more than 30 could not see that Rush's speech is absolutely indicative of a person with hearing failure. Having worked a bit in this, I can tell you for sure this would be hard to "fix".
But, I submit to your radical suppositions with no indication of evidence!