Yep, and you bought leaded gas and never complained about it. ETOh is toxic but not close to Pb. It is a replacement for Pb in gas. Recall, it came about as Pb was removed in order to boost octane and prevent premature combustion.
Lead phase out began in 1974 as the EPA required catalytic converters for control of HC, NOx and CO emissions because lead destroys the emissions control capacity of catalytic converters.
The U.S. Experience with the Phasedown of Lead in Gasoline
http://web.mit.edu/ckolstad/www/Newell.pdf
The ethanol mandate did not start until 2005 with the Renewable Fuel Standard.
Should the U.S. End the Ethanol Mandate?
http://www.wsj.com/articles/should-the-u-s-end-the-ethanol-mandate-1447643514
Today, the octane boost to prevent knocks is provided by gasoline aromatics, which comprise more than 25 percent by volume of each gallon of gasoline.
Fact Sheet: High Octane Fuels: Challenges & Opportunities
http://www.eesi.org/papers/view/fact-sheet-high-octane-fuels-challenges-opportunities
Aviation Fuel still uses lead, although in lower concentrations than before.
http://aviationweek.com/bca/getting-lead-out-future-avgas
Ethanol as 10% of our fuel is not due to replacing lead.