If he was saying that he would rather be aged to 50 with 50 million dollars then that is uncharacteristically smart of him.
Maybe a lot of people could take their knowledge to being a 10 year old, assuming
they get shifted in time too, and make 50 million or more with smart investments, pick a lucrative career path and get a leg up in studying for it, buy or mine bitcoin at the right time, etc.
However even Patrick realizes, if on a subconscious level, that given another go around he would probably fuck it up harder.
Like do something retarded like buy up all Betamax thinking that he could create demand for it, or give away the plot to the Phantom Menace and somehow cause George Lucas to come up with a worse script as a result.
Aging to 50 with 50 million is really very much the better option in his case.