I suspect 5 is too long but both producer (ag companies making herbicide) and consumer (farmers who are serially addicted to it) want more time to convert their dependency.
As a casual backyard gardener it dripped all over me for a while. Not every day. Not all day. But I am sure many people like me read of the risks now, and worry what we've been exposed to unbeknownst (it was casually sold to us as "the safer option" although nobody would have said safer meant totally safe)
More weed tolerant forms of food production are also not risk free: There's been a small outbreak of poisoning from immature non-spinach leaking into the crop for bagged baby spinach sold in the supermarkets. Cross contamination with unexpected plant material poses some risks.
Another systemic poison "Confidor" was bloody good at keeping bugs off our plants but always came with "you can't eat anything afterward" which was a painful lesson in what it takes to kill a modern mite. It's mostly off the market now too. Chlorpyriphos was used for Cockroaches and other bugs as a surface spray, "your kid would have to lick the walls to be affected" they said: now, banned for domestic use. The lists go on.