I think Paul Erdos' stimulant usage has been blown out of proportion. According to his biography, he took "10 to 20 milligrams of Benzedrine or Ritalin" ( https://archive.nytimes.com/www.nytimes.com/books/first/h/ho... ) which is, believe it or not, lower than a lot of people's commonly prescribed ADHD doses today. Erdos also published a lot of his best works before taking up non-caffeine stimulants, so it wasn't exactly the driving force behind his productivity.
Anyone using Erdos to justify an excessive or non-prescribed/non-medical stimulant habit has misunderstood the history.
> Steve Jobs swore that it changed him.
Steve Jobs was also famously terrible to everyone around him and died prematurely because he firmly believed he could cure pancreatic cancer with an all-fruit diet. Which of his properties are we to ascribe to the mind-altering drugs and which are we to overlook?
Again, using Steve Jobs to justify drug consumption (or anything, really) is missing the point that he was a unique person.