The key word there is disappeared which means engineering effort was put into vehicle design to make it a non issue. more robust/new starter design, more expensive battery tech required, simulations to validate no carbon buildup and real world testing, software calibration to make sure if engine is too cold or turbo too hot doesn't auto stop. All driving up costs to consumer thus consumers would liek to have something for that added cost. For many rural drivers a typical commute may be 15 miles with 2-3 stoplights and 1-2 lights. this effectively negates the fuel benefitsand often is annoying when coming to a stop at a stopsign to have car turn off momentarily for no benefit and possibly detriment to fuel economy if the ratio of stop sign initiated auto stops is higher than stop and sit at a stop light. I do appreciate personally the moments of quiet when not moving but is it worth it the added cost to my vehicle ¯\_(ツ)_/¯