The link referring to 7 years of update. If you follow the leaker on Twitter kamila in the original leak tweet they mention it can be 5 years of OS update + 3 years of security updates or something along the lines. The leakers isn't sure if it will be full 7 years of OS updates. I think other people reporting on the leak are failing to differentiate OS updates vs security updates making people to think Google rolled back on updates.