I have seen quite a few people who have filed patents state that they don't understand their own patents and (as a general statement) I find this puzzling. A patent has 3 main sections (a) background and prior art (b) description of the invention and (c) the claims.
The claims in particular are indeed technical and difficult for a lay person to readily understand. But the background, the prior art and the description of the implementation are not. Background and prior art are a summary of the technical context and I have never had any difficulty reading or understanding this section. The description may be rather long winded as it has to detail how to implement the invention so that it may be implemented from the description by someone skilled in the art, but it isn't legalese and should certainly be understood by the inventor! The lawyer can't write this by him/herself.
I can certainly sympathize with those who can't follow the claims (although I have found it to be perfectly possible with determined effort), but I simply fail to understand how a lawyer turns it into something "I can't understand any more." Find alien and unfamiliar - yes. But incomprehensible?