You would be taking unfair advantage of a nice thing Disney does for it's guests. It's people like you who abuse the GAC system by "pretending" to have autism in order to skip the lines. If people start taking unfair advantage of Rider Switch it's only a matter of time before Disney discontinues this needed benefit.
The point of rider switch is for one party to ride and then the person with the baby immediately rides once the first person is done. Not later in the day, not after dinner, but immediately. And definitely not weeks or months later. Disney keeps taking away these park benefits because of the unscrupulous people who abuse the system. They took away our paper FPs, they can take away a lot more.