In real homebrew, you are not at risk of methanol poisoning. If you brew some beer (step 1 to making yourself whiskey), the alcohol makeup ends up being in a 1:1000 ratio of methanol to ethanol. Distilling does not create any more methanol, it merely concentrates it. Let's play out the worst possible scenario here, where you're targeting azeotropic ethanol, and specifically targeting methanol with your cuts. In order to end up with a 100ml of methanol, you would need to be running a batch of targeting 100L (26 gallons) of ethanol, which means starting with 2,000L (530 gallons) of beer. That is wildly outside the range of casual home distilling.
And keep in mind in order to hit that worst case scenario, the distiller needs to know enough to be making cuts, but not know to discard the first cut, which is done normally even without methanol concerns simply because it contains a bunch of really disgusting aromatics.